13156690 has 16 divisors (see below), whose sum is σ = 24712128. Its totient is φ = 5033776.

The previous prime is 13156687. The next prime is 13156697. The reversal of 13156690 is 9665131.

It is a super-2 number, since 2×13156690² = 346196983512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13156697) 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, 28372 + ... + 28831.

It is an arithmetic number, because the mean of its divisors is an integer number (1544508).

Almost surely, 2^13156690 is an apocalyptic number.

13156690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13156690 is a deficient number, since it is larger than the sum of its proper divisors (11555438).

13156690 is a wasteful number, since it uses less digits than its factorization.

13156690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57233.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 13156690 is about 3627.2151852351. The cubic root of 13156690 is about 236.0743924241.

The spelling of 13156690 in words is "thirteen million, one hundred fifty-six thousand, six hundred ninety".