30942900 has 54 divisors (see below), whose sum is σ = 96991622. Its totient is φ = 8251200.

The previous prime is 30942893. The next prime is 30942911. The reversal of 30942900 is 924903.

It can be written as a sum of positive squares in 3 ways, for example, as 7056 + 30935844 = 84^2 + 5562^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16291 + ... + 18090.

Almost surely, 2^30942900 is an apocalyptic number.

30942900 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30942900 is an abundant number, since it is smaller than the sum of its proper divisors (66048722).

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

30942900 is a wasteful number, since it uses less digits than its factorization.

30942900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34401 (or 34391 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 30942900 is about 5562.6342680424. The cubic root of 30942900 is about 313.9450726809.

The spelling of 30942900 in words is "thirty million, nine hundred forty-two thousand, nine hundred".