30989052 has 36 divisors (see below), whose sum is σ = 81037320. Its totient is φ = 9973152.

The previous prime is 30989051. The next prime is 30989059. The reversal of 30989052 is 25098903.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 30988998 and 30989016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30989051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13798 + ... + 15885.

Almost surely, 2^30989052 is an apocalyptic number.

It is an amenable number.

30989052 is an abundant number, since it is smaller than the sum of its proper divisors (50048268).

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

30989052 is a wasteful number, since it uses less digits than its factorization.

30989052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29722 (or 29717 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 30989052 is about 5566.7811165879. The cubic root of 30989052 is about 314.1010804168.

The spelling of 30989052 in words is "thirty million, nine hundred eighty-nine thousand, fifty-two".