30994688 has 36 divisors (see below), whose sum is σ = 63398748. Its totient is φ = 15114240.

The previous prime is 30994679. The next prime is 30994693. The reversal of 30994688 is 88649903.

It can be written as a sum of positive squares in 2 ways, for example, as 12054784 + 18939904 = 3472^2 + 4352^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9020 + ... + 11972.

Almost surely, 2^30994688 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 30994688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31699374).

30994688 is an abundant number, since it is smaller than the sum of its proper divisors (32404060).

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

30994688 is an equidigital number, since it uses as much as digits as its factorization.

30994688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010 (or 2996 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 47.

The square root of 30994688 is about 5567.2873107107. The cubic root of 30994688 is about 314.1201211883.

The spelling of 30994688 in words is "thirty million, nine hundred ninety-four thousand, six hundred eighty-eight".