30969628 has 12 divisors (see below), whose sum is σ = 54723760. Its totient is φ = 15334272.

The previous prime is 30969623. The next prime is 30969689. The reversal of 30969628 is 82696903.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30969623) 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, 37173 + ... + 37996.

Almost surely, 2^30969628 is an apocalyptic number.

It is an amenable number.

30969628 is a deficient number, since it is larger than the sum of its proper divisors (23754132).

30969628 is a wasteful number, since it uses less digits than its factorization.

30969628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75276 (or 75274 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 30969628 is about 5565.0362083278. The cubic root of 30969628 is about 314.0354403045.

The spelling of 30969628 in words is "thirty million, nine hundred sixty-nine thousand, six hundred twenty-eight".