30942275 has 72 divisors (see below), whose sum is σ = 50465520. Its totient is φ = 18627840.

The previous prime is 30942271. The next prime is 30942277. The reversal of 30942275 is 57224903.

It is a happy number.

It is not a de Polignac number, because 30942275 - 2² = 30942271 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30942271) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 461792 + ... + 461858.

It is an arithmetic number, because the mean of its divisors is an integer number (700910).

Almost surely, 2^30942275 is an apocalyptic number.

30942275 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30942275 is a deficient number, since it is larger than the sum of its proper divisors (19523245).

30942275 is a wasteful number, since it uses less digits than its factorization.

30942275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 30942275 is about 5562.5780893395. The cubic root of 30942275 is about 313.9429589274.

The spelling of 30942275 in words is "thirty million, nine hundred forty-two thousand, two hundred seventy-five".