30713712 has 40 divisors (see below), whose sum is σ = 80847504. Its totient is φ = 10043904.

The previous prime is 30713623. The next prime is 30713719. The reversal of 30713712 is 21731703.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30713719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3493 + ... + 8580.

Almost surely, 2^30713712 is an apocalyptic number.

It is an amenable number.

30713712 is an abundant number, since it is smaller than the sum of its proper divisors (50133792).

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

30713712 is a wasteful number, since it uses less digits than its factorization.

30713712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12137 (or 12131 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 24.

The square root of 30713712 is about 5541.9953085509. The cubic root of 30713712 is about 313.1680411828.

Subtracting from 30713712 its reverse (21731703), we obtain a square (8982009 = 2997²).

The spelling of 30713712 in words is "thirty million, seven hundred thirteen thousand, seven hundred twelve".