30875256 has 160 divisors (see below), whose sum is σ = 94089600. Its totient is φ = 9434880.

The previous prime is 30875249. The next prime is 30875263. The reversal of 30875256 is 65257803.

It is an interprime number because it is at equal distance from previous prime (30875249) and next prime (30875263).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 30875256.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 582526 + ... + 582578.

It is an arithmetic number, because the mean of its divisors is an integer number (588060).

Almost surely, 2^30875256 is an apocalyptic number.

30875256 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30875256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47044800).

30875256 is an abundant number, since it is smaller than the sum of its proper divisors (63214344).

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

30875256 is a wasteful number, since it uses less digits than its factorization.

30875256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 30875256 is about 5556.5507286445. The cubic root of 30875256 is about 313.7161349247.

The spelling of 30875256 in words is "thirty million, eight hundred seventy-five thousand, two hundred fifty-six".