30745632 has 24 divisors (see below), whose sum is σ = 80707536. Its totient is φ = 10248512.

The previous prime is 30745609. The next prime is 30745633. The reversal of 30745632 is 23654703.

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a self number, because there is not a number n which added to its sum of digits gives 30745632.

It is not an unprimeable number, because it can be changed into a prime (30745633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160038 + ... + 160229.

It is an arithmetic number, because the mean of its divisors is an integer number (3362814).

Almost surely, 2^30745632 is an apocalyptic number.

30745632 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30745632 is an abundant number, since it is smaller than the sum of its proper divisors (49961904).

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

30745632 is a wasteful number, since it uses less digits than its factorization.

30745632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320280 (or 320272 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 30.

The square root of 30745632 is about 5544.8743899208. The cubic root of 30745632 is about 313.2764928834.

The spelling of 30745632 in words is "thirty million, seven hundred forty-five thousand, six hundred thirty-two".