30975256 has 32 divisors (see below), whose sum is σ = 63887040. Its totient is φ = 13989888.

The previous prime is 30975247. The next prime is 30975257. The reversal of 30975256 is 65257903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30975257) 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 7 ways as a sum of consecutive naturals, for example, 1720 + ... + 8056.

It is an arithmetic number, because the mean of its divisors is an integer number (1996470).

Almost surely, 2^30975256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30975256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31943520).

30975256 is an abundant number, since it is smaller than the sum of its proper divisors (32911784).

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

30975256 is a wasteful number, since it uses less digits than its factorization.

30975256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6403 (or 6399 counting only the distinct ones).

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 30975256 is about 5565.5418424445. The cubic root of 30975256 is about 314.0544619990.

The spelling of 30975256 in words is "thirty million, nine hundred seventy-five thousand, two hundred fifty-six".