16931372 has 12 divisors (see below), whose sum is σ = 29683416. Its totient is φ = 8450400.

The previous prime is 16931333. The next prime is 16931377. The reversal of 16931372 is 27313961.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16931377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1118 + ... + 5925.

It is an arithmetic number, because the mean of its divisors is an integer number (2473618).

Almost surely, 2^16931372 is an apocalyptic number.

It is an amenable number.

16931372 is a deficient number, since it is larger than the sum of its proper divisors (12752044).

16931372 is a wasteful number, since it uses less digits than its factorization.

16931372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7648 (or 7646 counting only the distinct ones).

The product of its digits is 6804, while the sum is 32.

The square root of 16931372 is about 4114.7748419567. The cubic root of 16931372 is about 256.7816886689.

The spelling of 16931372 in words is "sixteen million, nine hundred thirty-one thousand, three hundred seventy-two".