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80784983 = 595932309
BaseRepresentation
bin1001101000010…
…10111001010111
312122000022011102
410310022321113
5131140104413
612003300315
72000442506
oct464127127
9178008142
1080784983
1141667a54
122307a69b
1313976786
14aa2c83d
15715b458
hex4d0ae57

80784983 has 8 divisors (see below), whose sum is σ = 82328400. Its totient is φ = 79247488.

The previous prime is 80784973. The next prime is 80785009. The reversal of 80784983 is 38948708.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 80784983 - 210 = 80783959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80784973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33833 + ... + 36141.

It is an arithmetic number, because the mean of its divisors is an integer number (10291050).

Almost surely, 280784983 is an apocalyptic number.

80784983 is a deficient number, since it is larger than the sum of its proper divisors (1543417).

80784983 is a wasteful number, since it uses less digits than its factorization.

80784983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2961.

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 80784983 is about 8988.0466732211. The cubic root of 80784983 is about 432.2916822299.

The spelling of 80784983 in words is "eighty million, seven hundred eighty-four thousand, nine hundred eighty-three".

Divisors: 1 59 593 2309 34987 136231 1369237 80784983