16972228 has 36 divisors (see below), whose sum is σ = 37213932. Its totient is φ = 6713280.

The previous prime is 16972223. The next prime is 16972247. The reversal of 16972228 is 82227961.

It can be written as a sum of positive squares in 2 ways, for example, as 9746884 + 7225344 = 3122^2 + 2688^2 .

It is not an unprimeable number, because it can be changed into a prime (16972223) 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 11 ways as a sum of consecutive naturals, for example, 783 + ... + 5878.

Almost surely, 2^16972228 is an apocalyptic number.

It is an amenable number.

16972228 is an abundant number, since it is smaller than the sum of its proper divisors (20241704).

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

16972228 is a wasteful number, since it uses less digits than its factorization.

16972228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6692 (or 6683 counting only the distinct ones).

The product of its digits is 24192, while the sum is 37.

The square root of 16972228 is about 4119.7363993343. The cubic root of 16972228 is about 256.9880638625.

The spelling of 16972228 in words is "sixteen million, nine hundred seventy-two thousand, two hundred twenty-eight".