30479172 has 24 divisors (see below), whose sum is σ = 71402016. Its totient is φ = 10119168.

The previous prime is 30479159. The next prime is 30479221. The reversal of 30479172 is 27197403.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1858 + ... + 8025.

It is an arithmetic number, because the mean of its divisors is an integer number (2975084).

Almost surely, 2^30479172 is an apocalyptic number.

It is an amenable number.

30479172 is an abundant number, since it is smaller than the sum of its proper divisors (40922844).

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

30479172 is a wasteful number, since it uses less digits than its factorization.

30479172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10147 (or 10145 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 30479172 is about 5520.7945080396. The cubic root of 30479172 is about 312.3688520617.

The spelling of 30479172 in words is "thirty million, four hundred seventy-nine thousand, one hundred seventy-two".