30640604 has 12 divisors (see below), whose sum is σ = 54007800. Its totient is φ = 15209808.

The previous prime is 30640601. The next prime is 30640609. The reversal of 30640604 is 40604603.

It is a super-2 number, since 2×30640604² = 1877693226969632, 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 30640604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30640601) 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, 26999 + ... + 28110.

It is an arithmetic number, because the mean of its divisors is an integer number (4500650).

Almost surely, 2^30640604 is an apocalyptic number.

It is an amenable number.

30640604 is a deficient number, since it is larger than the sum of its proper divisors (23367196).

30640604 is a wasteful number, since it uses less digits than its factorization.

30640604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55252 (or 55250 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 30640604 is about 5535.3955594880. The cubic root of 30640604 is about 312.9193652931.

The spelling of 30640604 in words is "thirty million, six hundred forty thousand, six hundred four".