30997736 has 32 divisors (see below), whose sum is σ = 72463680. Its totient is φ = 12076800.

The previous prime is 30997717. The next prime is 30997741. The reversal of 30997736 is 63779903.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24545 + ... + 25776.

It is an arithmetic number, because the mean of its divisors is an integer number (2264490).

Almost surely, 2^30997736 is an apocalyptic number.

It is an amenable number.

30997736 is an abundant number, since it is smaller than the sum of its proper divisors (41465944).

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

30997736 is a wasteful number, since it uses less digits than its factorization.

30997736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50345 (or 50341 counting only the distinct ones).

The product of its (nonzero) digits is 214326, while the sum is 44.

The square root of 30997736 is about 5567.5610459159. The cubic root of 30997736 is about 314.1304176489.

It can be divided in two parts, 309977 and 36, that added together give a palindrome (310013).

The spelling of 30997736 in words is "thirty million, nine hundred ninety-seven thousand, seven hundred thirty-six".