30986900 has 36 divisors (see below), whose sum is σ = 76849248. Its totient is φ = 10623840.

The previous prime is 30986899. The next prime is 30986909. The reversal of 30986900 is 968903.

It is a super-2 number, since 2×30986900² = 1920375943220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30986909) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21434 + ... + 22833.

Almost surely, 2^30986900 is an apocalyptic number.

It is an amenable number.

30986900 is an abundant number, since it is smaller than the sum of its proper divisors (45862348).

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

30986900 is a wasteful number, since it uses less digits than its factorization.

30986900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44288 (or 44281 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 30986900 is about 5566.5878237930. The cubic root of 30986900 is about 314.0938094492.

The spelling of 30986900 in words is "thirty million, nine hundred eighty-six thousand, nine hundred".