30680375 has 32 divisors (see below), whose sum is σ = 42659136. Its totient is φ = 21840000.

The previous prime is 30680357. The next prime is 30680399. The reversal of 30680375 is 57308603.

It is a happy number.

It is not a de Polignac number, because 30680375 - 2⁸ = 30680119 is a prime.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 72665 + ... + 73085.

It is an arithmetic number, because the mean of its divisors is an integer number (1333098).

Almost surely, 2^30680375 is an apocalyptic number.

30680375 is a deficient number, since it is larger than the sum of its proper divisors (11978761).

30680375 is a wasteful number, since it uses less digits than its factorization.

30680375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500 (or 490 counting only the distinct ones).

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

The square root of 30680375 is about 5538.9868207101. The cubic root of 30680375 is about 313.0546948211.

Adding to 30680375 its reverse (57308603), we get a palindrome (87988978).

The spelling of 30680375 in words is "thirty million, six hundred eighty thousand, three hundred seventy-five".