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83042880 = 2635233761
BaseRepresentation
bin1001111001100…
…10001001000000
312210021000102020
410330302021000
5132224333010
612123521440
72025565344
oct474621100
9183230366
1083042880
114296a388
1223989280
13142873cb
14b059624
157455470
hex4f32240

83042880 has 112 divisors (see below), whose sum is σ = 275197824. Its totient is φ = 21176320.

The previous prime is 83042879. The next prime is 83042929. The reversal of 83042880 is 8824038.

It is a super-2 number, since 2×830428802 = 13792239837388800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20200 + ... + 23960.

Almost surely, 283042880 is an apocalyptic number.

83042880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83042880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137598912).

83042880 is an abundant number, since it is smaller than the sum of its proper divisors (192154944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83042880 is a wasteful number, since it uses less digits than its factorization.

83042880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3804 (or 3794 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 83042880 is about 9112.7866210068. The cubic root of 83042880 is about 436.2821729241.

The spelling of 83042880 in words is "eighty-three million, forty-two thousand, eight hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 23 24 30 32 40 46 48 60 64 69 80 92 96 115 120 138 160 184 192 230 240 276 320 345 368 460 480 552 690 736 920 960 1104 1380 1472 1840 2208 2760 3680 3761 4416 5520 7360 7522 11040 11283 15044 18805 22080 22566 30088 37610 45132 56415 60176 75220 86503 90264 112830 120352 150440 173006 180528 225660 240704 259509 300880 346012 361056 432515 451320 519018 601760 692024 722112 865030 902640 1038036 1203520 1297545 1384048 1730060 1805280 2076072 2595090 2768096 3460120 3610560 4152144 5190180 5536192 6920240 8304288 10380360 13840480 16608576 20760720 27680960 41521440 83042880