30133975 has 12 divisors (see below), whose sum is σ = 38278800. Its totient is φ = 23518400.

The previous prime is 30133969. The next prime is 30133993. The reversal of 30133975 is 57933103.

It is not a de Polignac number, because 30133975 - 2³ = 30133967 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13675 + ... + 15724.

It is an arithmetic number, because the mean of its divisors is an integer number (3189900).

Almost surely, 2^30133975 is an apocalyptic number.

30133975 is a deficient number, since it is larger than the sum of its proper divisors (8144825).

30133975 is a wasteful number, since it uses less digits than its factorization.

30133975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29450 (or 29445 counting only the distinct ones).

The product of its (nonzero) digits is 8505, while the sum is 31.

The square root of 30133975 is about 5489.4421392342. The cubic root of 30133975 is about 311.1851098307.

The spelling of 30133975 in words is "thirty million, one hundred thirty-three thousand, nine hundred seventy-five".