30875840 has 28 divisors (see below), whose sum is σ = 73523856. Its totient is φ = 12350208.

The previous prime is 30875837. The next prime is 30875857. The reversal of 30875840 is 4857803.

It is a self number, because there is not a number n which added to its sum of digits gives 30875840.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47924 + ... + 48563.

It is an arithmetic number, because the mean of its divisors is an integer number (2625852).

Almost surely, 2^30875840 is an apocalyptic number.

It is an amenable number.

30875840 is an abundant number, since it is smaller than the sum of its proper divisors (42648016).

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

30875840 is an equidigital number, since it uses as much as digits as its factorization.

30875840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96504 (or 96494 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 30875840 is about 5556.6032789826. The cubic root of 30875840 is about 313.7181128739.

The spelling of 30875840 in words is "thirty million, eight hundred seventy-five thousand, eight hundred forty".