30725604 has 144 divisors (see below), whose sum is σ = 97598592. Its totient is φ = 7934976.

The previous prime is 30725581. The next prime is 30725633. The reversal of 30725604 is 40652703.

It is a happy number.

30725604 is a `hidden beast` number, since 30 + 7 + 25 + 604 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 271852 + ... + 271964.

It is an arithmetic number, because the mean of its divisors is an integer number (677768).

Almost surely, 2^30725604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30725604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48799296).

30725604 is an abundant number, since it is smaller than the sum of its proper divisors (66872988).

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

30725604 is a wasteful number, since it uses less digits than its factorization.

30725604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 30725604 is about 5543.0681034965. The cubic root of 30725604 is about 313.2084543355.

It can be divided in two parts, 30725 and 604, that added together give a square (31329 = 177²).

The spelling of 30725604 in words is "thirty million, seven hundred twenty-five thousand, six hundred four".