30946900 has 18 divisors (see below), whose sum is σ = 67154990. Its totient is φ = 12378720.

The previous prime is 30946889. The next prime is 30946913. The reversal of 30946900 is 964903.

It can be written as a sum of positive squares in 3 ways, for example, as 9156676 + 21790224 = 3026^2 + 4668^2 .

It is a super-2 number, since 2×30946900² = 1915421239220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 154635 + ... + 154834.

Almost surely, 2^30946900 is an apocalyptic number.

It is an amenable number.

30946900 is an abundant number, since it is smaller than the sum of its proper divisors (36208090).

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

30946900 is a wasteful number, since it uses less digits than its factorization.

30946900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309483 (or 309476 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 30946900 is about 5562.9937983068. The cubic root of 30946900 is about 313.9586000295.

The spelling of 30946900 in words is "thirty million, nine hundred forty-six thousand, nine hundred".