30689872 has 40 divisors (see below), whose sum is σ = 62424576. Its totient is φ = 14599296.

The previous prime is 30689861. The next prime is 30689881. The reversal of 30689872 is 27898603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27273 + ... + 28375.

Almost surely, 2^30689872 is an apocalyptic number.

It is an amenable number.

30689872 is an abundant number, since it is smaller than the sum of its proper divisors (31734704).

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

30689872 is a wasteful number, since it uses less digits than its factorization.

30689872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1195 (or 1189 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 30689872 is about 5539.8440411261. The cubic root of 30689872 is about 313.0869931413.

The spelling of 30689872 in words is "thirty million, six hundred eighty-nine thousand, eight hundred seventy-two".