Search a number
-
+
130788280 = 2357467101
BaseRepresentation
bin1111100101110…
…10101110111000
3100010002201210101
413302322232320
5231440211110
620551125144
73145452640
oct762725670
9303081711
10130788280
1167910197
12379737b4
132113351c
1413527520
15b73713a
hex7cbabb8

130788280 has 32 divisors (see below), whose sum is σ = 336313440. Its totient is φ = 44841600.

The previous prime is 130788277. The next prime is 130788311. The reversal of 130788280 is 82887031.

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 233271 + ... + 233830.

It is an arithmetic number, because the mean of its divisors is an integer number (10509795).

Almost surely, 2130788280 is an apocalyptic number.

130788280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

130788280 is an abundant number, since it is smaller than the sum of its proper divisors (205525160).

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

130788280 is a wasteful number, since it uses less digits than its factorization.

130788280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467119 (or 467115 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 37.

The square root of 130788280 is about 11436.2703710607. The cubic root of 130788280 is about 507.6015537669.

The spelling of 130788280 in words is "one hundred thirty million, seven hundred eighty-eight thousand, two hundred eighty".

Divisors: 1 2 4 5 7 8 10 14 20 28 35 40 56 70 140 280 467101 934202 1868404 2335505 3269707 3736808 4671010 6539414 9342020 13078828 16348535 18684040 26157656 32697070 65394140 130788280