30642860 has 12 divisors (see below), whose sum is σ = 64350048. Its totient is φ = 12257136.

The previous prime is 30642847. The next prime is 30642869. The reversal of 30642860 is 6824603.

It is not an unprimeable number, because it can be changed into a prime (30642869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 766052 + ... + 766091.

It is an arithmetic number, because the mean of its divisors is an integer number (5362504).

Almost surely, 2^30642860 is an apocalyptic number.

It is an amenable number.

30642860 is an abundant number, since it is smaller than the sum of its proper divisors (33707188).

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

30642860 is a wasteful number, since it uses less digits than its factorization.

30642860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532152 (or 1532150 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 30642860 is about 5535.5993352120. The cubic root of 30642860 is about 312.9270449585.

The spelling of 30642860 in words is "thirty million, six hundred forty-two thousand, eight hundred sixty".