30913386 has 32 divisors (see below), whose sum is σ = 72941568. Its totient is φ = 8547120.

The previous prime is 30913343. The next prime is 30913427. The reversal of 30913386 is 68331903.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10570 + ... + 13173.

It is an arithmetic number, because the mean of its divisors is an integer number (2279424).

Almost surely, 2^30913386 is an apocalyptic number.

30913386 is an abundant number, since it is smaller than the sum of its proper divisors (42028182).

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

30913386 is a wasteful number, since it uses less digits than its factorization.

30913386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23786.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 30913386 is about 5559.9807553624. The cubic root of 30913386 is about 313.8452250863.

It can be divided in two parts, 309 and 13386, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 30913386 in words is "thirty million, nine hundred thirteen thousand, three hundred eighty-six".