30620913 has 16 divisors (see below), whose sum is σ = 43118400. Its totient is φ = 19275840.

The previous prime is 30620903. The next prime is 30620921. The reversal of 30620913 is 31902603.

It is not a de Polignac number, because 30620913 - 2⁵ = 30620881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30620903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21483 + ... + 22863.

It is an arithmetic number, because the mean of its divisors is an integer number (2694900).

Almost surely, 2^30620913 is an apocalyptic number.

It is an amenable number.

30620913 is a deficient number, since it is larger than the sum of its proper divisors (12497487).

30620913 is a wasteful number, since it uses less digits than its factorization.

30620913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 30620913 is about 5533.6166292941. The cubic root of 30620913 is about 312.8523190123.

The spelling of 30620913 in words is "thirty million, six hundred twenty thousand, nine hundred thirteen".