30645700 has 18 divisors (see below), whose sum is σ = 66501386. Its totient is φ = 12258240.

The previous prime is 30645697. The next prime is 30645707. The reversal of 30645700 is 754603.

It can be written as a sum of positive squares in 3 ways, for example, as 1420864 + 29224836 = 1192^2 + 5406^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (30645707) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 153129 + ... + 153328.

Almost surely, 2^30645700 is an apocalyptic number.

It is an amenable number.

30645700 is an abundant number, since it is smaller than the sum of its proper divisors (35855686).

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

30645700 is a wasteful number, since it uses less digits than its factorization.

30645700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306471 (or 306464 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 30645700 is about 5535.8558507244. The cubic root of 30645700 is about 312.9367120865.

The spelling of 30645700 in words is "thirty million, six hundred forty-five thousand, seven hundred".