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130684938 = 2321780823
BaseRepresentation
bin1111100101000…
…01100000001010
3100002220111000220
413302201200022
5231423404223
620545010510
73144542436
oct762414012
9302814026
10130684938
116784a58a
1237923a36
13210c8487
14134db9c6
15b7166e3
hex7ca180a

130684938 has 8 divisors (see below), whose sum is σ = 261369888. Its totient is φ = 43561644.

The previous prime is 130684927. The next prime is 130684969. The reversal of 130684938 is 839486031.

It is a happy number.

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

130684938 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 130684938.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10890406 + ... + 10890417.

It is an arithmetic number, because the mean of its divisors is an integer number (32671236).

Almost surely, 2130684938 is an apocalyptic number.

130684938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

130684938 is a wasteful number, since it uses less digits than its factorization.

130684938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21780828.

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 130684938 is about 11431.7513094014. The cubic root of 130684938 is about 507.4678252148.

The spelling of 130684938 in words is "one hundred thirty million, six hundred eighty-four thousand, nine hundred thirty-eight".

Divisors: 1 2 3 6 21780823 43561646 65342469 130684938