30409864 has 64 divisors (see below), whose sum is σ = 63504000. Its totient is φ = 13601280.

The previous prime is 30409859. The next prime is 30409867. The reversal of 30409864 is 46890403.

It is not an unprimeable number, because it can be changed into a prime (30409867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218707 + ... + 218845.

It is an arithmetic number, because the mean of its divisors is an integer number (992250).

Almost surely, 2^30409864 is an apocalyptic number.

It is an amenable number.

30409864 is an abundant number, since it is smaller than the sum of its proper divisors (33094136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30409864 is a wasteful number, since it uses less digits than its factorization.

30409864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 30409864 is about 5514.5139405028. The cubic root of 30409864 is about 312.1319023701.

The spelling of 30409864 in words is "thirty million, four hundred nine thousand, eight hundred sixty-four".