30613893 has 12 divisors (see below), whose sum is σ = 41797440. Its totient is φ = 19931016.

The previous prime is 30613871. The next prime is 30613903. The reversal of 30613893 is 39831603.

It is not a de Polignac number, because 30613893 - 2¹² = 30609797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30613813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2788 + ... + 8306.

It is an arithmetic number, because the mean of its divisors is an integer number (3483120).

Almost surely, 2^30613893 is an apocalyptic number.

It is an amenable number.

30613893 is a deficient number, since it is larger than the sum of its proper divisors (11183547).

30613893 is an equidigital number, since it uses as much as digits as its factorization.

30613893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5608 (or 5565 counting only the distinct ones).

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

The square root of 30613893 is about 5532.9822880613. The cubic root of 30613893 is about 312.8284095234.

The spelling of 30613893 in words is "thirty million, six hundred thirteen thousand, eight hundred ninety-three".