30788913 has 8 divisors (see below), whose sum is σ = 41328000. Its totient is φ = 20387888.

The previous prime is 30788897. The next prime is 30788939. The reversal of 30788913 is 31988703.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 30788913 - 2⁴ = 30788897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30788213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33993 + ... + 34886.

It is an arithmetic number, because the mean of its divisors is an integer number (5166000).

Almost surely, 2^30788913 is an apocalyptic number.

It is an amenable number.

30788913 is a deficient number, since it is larger than the sum of its proper divisors (10539087).

30788913 is a wasteful number, since it uses less digits than its factorization.

30788913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69031.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 30788913 is about 5548.7758109334. The cubic root of 30788913 is about 313.4234250017.

The spelling of 30788913 in words is "thirty million, seven hundred eighty-eight thousand, nine hundred thirteen".