30684913 has 8 divisors (see below), whose sum is σ = 35284928. Its totient is φ = 26139024.

The previous prime is 30684889. The next prime is 30684959. The reversal of 30684913 is 31948603.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30684913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30684713) 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, 12306 + ... + 14587.

It is an arithmetic number, because the mean of its divisors is an integer number (4410616).

Almost surely, 2^30684913 is an apocalyptic number.

It is an amenable number.

30684913 is a deficient number, since it is larger than the sum of its proper divisors (4600015).

30684913 is a wasteful number, since it uses less digits than its factorization.

30684913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27063.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 30684913 is about 5539.3964472675. The cubic root of 30684913 is about 313.0701289237.

The spelling of 30684913 in words is "thirty million, six hundred eighty-four thousand, nine hundred thirteen".