30478480 has 40 divisors (see below), whose sum is σ = 71138304. Its totient is φ = 12144000.

The previous prime is 30478429. The next prime is 30478493. The reversal of 30478480 is 8487403.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×30478480² = 1857875486220800, which contains 22 as substring.

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, 25905 + ... + 27055.

Almost surely, 2^30478480 is an apocalyptic number.

It is an amenable number.

30478480 is an abundant number, since it is smaller than the sum of its proper divisors (40659824).

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

30478480 is a wasteful number, since it uses less digits than its factorization.

30478480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495 (or 1489 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 30478480 is about 5520.7318355450. The cubic root of 30478480 is about 312.3664880334.

The spelling of 30478480 in words is "thirty million, four hundred seventy-eight thousand, four hundred eighty".