30855164 has 12 divisors (see below), whose sum is σ = 56838600. Its totient is φ = 14615568.

The previous prime is 30855161. The next prime is 30855173. The reversal of 30855164 is 46155803.

It is a happy number.

It is a super-2 number, since 2×30855164² = 1904082290933792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30855164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30855161) 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, 202919 + ... + 203070.

It is an arithmetic number, because the mean of its divisors is an integer number (4736550).

Almost surely, 2^30855164 is an apocalyptic number.

It is an amenable number.

30855164 is a deficient number, since it is larger than the sum of its proper divisors (25983436).

30855164 is a wasteful number, since it uses less digits than its factorization.

30855164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406012 (or 406010 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The square root of 30855164 is about 5554.7424782793. The cubic root of 30855164 is about 313.6480701466.

The spelling of 30855164 in words is "thirty million, eight hundred fifty-five thousand, one hundred sixty-four".