30689672 has 32 divisors (see below), whose sum is σ = 62256600. Its totient is φ = 14098944.

The previous prime is 30689669. The next prime is 30689717. The reversal of 30689672 is 27698603.

It can be written as a sum of positive squares in 4 ways, for example, as 10023556 + 20666116 = 3166^2 + 4546^2 .

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, 27428 + ... + 28524.

Almost surely, 2^30689672 is an apocalyptic number.

It is an amenable number.

30689672 is an abundant number, since it is smaller than the sum of its proper divisors (31566928).

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

30689672 is a wasteful number, since it uses less digits than its factorization.

30689672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385 (or 1381 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 30689672 is about 5539.8259900470. The cubic root of 30689672 is about 313.0863130305.

The spelling of 30689672 in words is "thirty million, six hundred eighty-nine thousand, six hundred seventy-two".