30990573 has 16 divisors (see below), whose sum is σ = 46981440. Its totient is φ = 20179152.

The previous prime is 30990563. The next prime is 30990593. The reversal of 30990573 is 37509903.

It is not a de Polignac number, because 30990573 - 2¹² = 30986477 is a prime.

It is a super-2 number, since 2×30990573² = 1920831229736658, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30990503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12186 + ... + 14507.

It is an arithmetic number, because the mean of its divisors is an integer number (2936340).

Almost surely, 2^30990573 is an apocalyptic number.

It is an amenable number.

30990573 is a deficient number, since it is larger than the sum of its proper divisors (15990867).

30990573 is a wasteful number, since it uses less digits than its factorization.

30990573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26745 (or 26739 counting only the distinct ones).

The product of its (nonzero) digits is 25515, while the sum is 36.

The square root of 30990573 is about 5566.9177288694. The cubic root of 30990573 is about 314.1062192201.

The spelling of 30990573 in words is "thirty million, nine hundred ninety thousand, five hundred seventy-three".