30713904 has 100 divisors (see below), whose sum is σ = 95785536. Its totient is φ = 9445248.

The previous prime is 30713897. The next prime is 30713909. The reversal of 30713904 is 40931703.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (30713909) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15937 + ... + 17759.

Almost surely, 2^30713904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30713904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47892768).

30713904 is an abundant number, since it is smaller than the sum of its proper divisors (65071632).

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

30713904 is a wasteful number, since it uses less digits than its factorization.

30713904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856 (or 1841 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 30713904 is about 5542.0126308048. The cubic root of 30713904 is about 313.1686937485.

The spelling of 30713904 in words is "thirty million, seven hundred thirteen thousand, nine hundred four".