30889564 has 12 divisors (see below), whose sum is σ = 55375488. Its totient is φ = 15068000.

The previous prime is 30889559. The next prime is 30889571. The reversal of 30889564 is 46598803.

It is a super-2 number, since 2×30889564² = 1908330328220192, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30889564.

It is a congruent number.

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, 94012 + ... + 94339.

It is an arithmetic number, because the mean of its divisors is an integer number (4614624).

Almost surely, 2^30889564 is an apocalyptic number.

It is an amenable number.

30889564 is a deficient number, since it is larger than the sum of its proper divisors (24485924).

30889564 is a wasteful number, since it uses less digits than its factorization.

30889564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188396 (or 188394 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 43.

The square root of 30889564 is about 5557.8380688897. The cubic root of 30889564 is about 313.7645875029.

The spelling of 30889564 in words is "thirty million, eight hundred eighty-nine thousand, five hundred sixty-four".