30474720 has 72 divisors (see below), whose sum is σ = 103999896. Its totient is φ = 8126208.

The previous prime is 30474683. The next prime is 30474751. The reversal of 30474720 is 2747403.

It is a tau number, because it is divible by the number of its divisors (72).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9142 + ... + 12021.

It is an arithmetic number, because the mean of its divisors is an integer number (1444443).

Almost surely, 2^30474720 is an apocalyptic number.

30474720 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30474720 is an abundant number, since it is smaller than the sum of its proper divisors (73525176).

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

30474720 is a wasteful number, since it uses less digits than its factorization.

30474720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21184 (or 21173 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 30474720 is about 5520.3912904793. The cubic root of 30474720 is about 312.3536423983.

The spelling of 30474720 in words is "thirty million, four hundred seventy-four thousand, seven hundred twenty".