16972772 has 12 divisors (see below), whose sum is σ = 30726780. Its totient is φ = 8193696.

The previous prime is 16972771. The next prime is 16972819. The reversal of 16972772 is 27727961.

It can be written as a sum of positive squares in 2 ways, for example, as 13498276 + 3474496 = 3674^2 + 1864^2 .

It is not an unprimeable number, because it can be changed into a prime (16972771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73043 + ... + 73274.

It is an arithmetic number, because the mean of its divisors is an integer number (2560565).

Almost surely, 2^16972772 is an apocalyptic number.

It is an amenable number.

16972772 is a deficient number, since it is larger than the sum of its proper divisors (13754008).

16972772 is a wasteful number, since it uses less digits than its factorization.

16972772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146350 (or 146348 counting only the distinct ones).

The product of its digits is 74088, while the sum is 41.

The square root of 16972772 is about 4119.8024224470. The cubic root of 16972772 is about 256.9908095246.

The spelling of 16972772 in words is "sixteen million, nine hundred seventy-two thousand, seven hundred seventy-two".