30894975 has 36 divisors (see below), whose sum is σ = 56268472. Its totient is φ = 16200000.

The previous prime is 30894971. The next prime is 30894977. The reversal of 30894975 is 57949803.

It is not a de Polignac number, because 30894975 - 2² = 30894971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30894975.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30894971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 12600 + ... + 14850.

Almost surely, 2^30894975 is an apocalyptic number.

30894975 is a deficient number, since it is larger than the sum of its proper divisors (25373497).

30894975 is a wasteful number, since it uses less digits than its factorization.

30894975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2328 (or 2320 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 30894975 is about 5558.3248375747. The cubic root of 30894975 is about 313.7829074017.

The spelling of 30894975 in words is "thirty million, eight hundred ninety-four thousand, nine hundred seventy-five".