30939260 has 48 divisors (see below), whose sum is σ = 71971200. Its totient is φ = 11077440.

The previous prime is 30939253. The next prime is 30939299. The reversal of 30939260 is 6293903.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13691 + ... + 15789.

It is an arithmetic number, because the mean of its divisors is an integer number (1499400).

Almost surely, 2^30939260 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 30939260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35985600).

30939260 is an abundant number, since it is smaller than the sum of its proper divisors (41031940).

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

30939260 is a wasteful number, since it uses less digits than its factorization.

30939260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2186 (or 2184 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 32.

The square root of 30939260 is about 5562.3070753061. The cubic root of 30939260 is about 313.9327617805.

The spelling of 30939260 in words is "thirty million, nine hundred thirty-nine thousand, two hundred sixty".