30707472 has 20 divisors (see below), whose sum is σ = 79327760. Its totient is φ = 10235808.

The previous prime is 30707471. The next prime is 30707527. The reversal of 30707472 is 27470703.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (30707471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319822 + ... + 319917.

It is an arithmetic number, because the mean of its divisors is an integer number (3966388).

Almost surely, 2^30707472 is an apocalyptic number.

It is an amenable number.

30707472 is an abundant number, since it is smaller than the sum of its proper divisors (48620288).

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

30707472 is a wasteful number, since it uses less digits than its factorization.

30707472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639750 (or 639744 counting only the distinct ones).

The product of its (nonzero) digits is 8232, while the sum is 30.

The square root of 30707472 is about 5541.4323058213. The cubic root of 30707472 is about 313.1468313192.

The spelling of 30707472 in words is "thirty million, seven hundred seven thousand, four hundred seventy-two".