30973936 has 20 divisors (see below), whose sum is σ = 68585392. Its totient is φ = 13274496.

The previous prime is 30973931. The next prime is 30973961. The reversal of 30973936 is 63937903.

It is a super-2 number, since 2×30973936² = 1918769422664192, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30973931) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 138165 + ... + 138388.

Almost surely, 2^30973936 is an apocalyptic number.

It is an amenable number.

30973936 is an abundant number, since it is smaller than the sum of its proper divisors (37611456).

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

30973936 is a wasteful number, since it uses less digits than its factorization.

30973936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276568 (or 276562 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 40.

The square root of 30973936 is about 5565.4232543446. The cubic root of 30973936 is about 314.0500008276.

The spelling of 30973936 in words is "thirty million, nine hundred seventy-three thousand, nine hundred thirty-six".