30449913 has 48 divisors (see below), whose sum is σ = 48312000. Its totient is φ = 16982784.

The previous prime is 30449911. The next prime is 30449933. The reversal of 30449913 is 31994403.

It is not a de Polignac number, because 30449913 - 2¹ = 30449911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30449911) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 279303 + ... + 279411.

It is an arithmetic number, because the mean of its divisors is an integer number (1006500).

Almost surely, 2^30449913 is an apocalyptic number.

It is an amenable number.

30449913 is a deficient number, since it is larger than the sum of its proper divisors (17862087).

30449913 is a wasteful number, since it uses less digits than its factorization.

30449913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186 (or 173 counting only the distinct ones).

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

The square root of 30449913 is about 5518.1439814488. The cubic root of 30449913 is about 312.2688654613.

The spelling of 30449913 in words is "thirty million, four hundred forty-nine thousand, nine hundred thirteen".