30445813 has 8 divisors (see below), whose sum is σ = 32795136. Its totient is φ = 28182000.

The previous prime is 30445787. The next prime is 30445843. The reversal of 30445813 is 31854403.

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 30445813 - 2⁵ = 30445781 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30445843) 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, 20638 + ... + 22063.

It is an arithmetic number, because the mean of its divisors is an integer number (4099392).

Almost surely, 2^30445813 is an apocalyptic number.

It is an amenable number.

30445813 is a deficient number, since it is larger than the sum of its proper divisors (2349323).

30445813 is a wasteful number, since it uses less digits than its factorization.

30445813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42755.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 30445813 is about 5517.7724672190. The cubic root of 30445813 is about 312.2548494408.

The spelling of 30445813 in words is "thirty million, four hundred forty-five thousand, eight hundred thirteen".