30937228 has 24 divisors (see below), whose sum is σ = 63140000. Its totient is φ = 13258224.

The previous prime is 30937223. The next prime is 30937241. The reversal of 30937228 is 82273903.

It is a super-2 number, since 2×30937228² = 1914224152647968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30937193 and 30937202.

It is not an unprimeable number, because it can be changed into a prime (30937223) 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, 9903 + ... + 12646.

Almost surely, 2^30937228 is an apocalyptic number.

It is an amenable number.

30937228 is an abundant number, since it is smaller than the sum of its proper divisors (32202772).

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

30937228 is a wasteful number, since it uses less digits than its factorization.

30937228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22574 (or 22558 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 30937228 is about 5562.1244142863. The cubic root of 30937228 is about 313.9258889019.

The spelling of 30937228 in words is "thirty million, nine hundred thirty-seven thousand, two hundred twenty-eight".