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13029972 = 2231957149
BaseRepresentation
bin110001101101…
…001001010100
3220111222202120
4301231021110
511313424342
61143135540
7215516154
oct61551124
926458676
1013029972
11739a67a
1244445b0
132912a57
141a32764
151225aec
hexc6d254

13029972 has 24 divisors (see below), whose sum is σ = 32004000. Its totient is φ = 4114656.

The previous prime is 13029971. The next prime is 13029977. The reversal of 13029972 is 27992031.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13029971) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 28347 + ... + 28802.

It is an arithmetic number, because the mean of its divisors is an integer number (1333500).

Almost surely, 213029972 is an apocalyptic number.

13029972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13029972 is an abundant number, since it is smaller than the sum of its proper divisors (18974028).

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

13029972 is a wasteful number, since it uses less digits than its factorization.

13029972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57175 (or 57173 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 13029972 is about 3609.7052511251. The cubic root of 13029972 is about 235.3140331623.

The spelling of 13029972 in words is "thirteen million, twenty-nine thousand, nine hundred seventy-two".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 228 57149 114298 171447 228596 342894 685788 1085831 2171662 3257493 4343324 6514986 13029972