30998304 has 72 divisors (see below), whose sum is σ = 90565020. Its totient is φ = 10050048.

The previous prime is 30998281. The next prime is 30998311. The reversal of 30998304 is 40389903.

It can be written as a sum of positive squares in 2 ways, for example, as 25522704 + 5475600 = 5052^2 + 2340^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9202 + ... + 12110.

Almost surely, 2^30998304 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 30998304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45282510).

30998304 is an abundant number, since it is smaller than the sum of its proper divisors (59566716).

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

30998304 is a wasteful number, since it uses less digits than its factorization.

30998304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2962 (or 2951 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 30998304 is about 5567.6120554507. The cubic root of 30998304 is about 314.1323363373.

The spelling of 30998304 in words is "thirty million, nine hundred ninety-eight thousand, three hundred four".