30989012 has 12 divisors (see below), whose sum is σ = 54294996. Its totient is φ = 15476160.

The previous prime is 30989003. The next prime is 30989029. The reversal of 30989012 is 21098903.

It can be written as a sum of positive squares in 2 ways, for example, as 12292036 + 18696976 = 3506^2 + 4324^2 .

It is a super-2 number, since 2×30989012² = 1920637729472288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 30989012.

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, 353 + ... + 7880.

It is an arithmetic number, because the mean of its divisors is an integer number (4524583).

Almost surely, 2^30989012 is an apocalyptic number.

It is an amenable number.

30989012 is a deficient number, since it is larger than the sum of its proper divisors (23305984).

30989012 is a wasteful number, since it uses less digits than its factorization.

30989012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9178 (or 9176 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 30989012 is about 5566.7775238463. Note that the first 3 decimals coincide. The cubic root of 30989012 is about 314.1009452718.

It can be divided in two parts, 3098901 and 2, that added together give a palindrome (3098903).

The spelling of 30989012 in words is "thirty million, nine hundred eighty-nine thousand, twelve".