30687725 has 12 divisors (see below), whose sum is σ = 38330880. Its totient is φ = 24370800.

The previous prime is 30687659. The next prime is 30687743. The reversal of 30687725 is 52778603.

It is a happy number.

It is not a de Polignac number, because 30687725 - 2⁸ = 30687469 is a prime.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

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 11 ways as a sum of consecutive naturals, for example, 941 + ... + 7890.

It is an arithmetic number, because the mean of its divisors is an integer number (3194240).

Almost surely, 2^30687725 is an apocalyptic number.

It is an amenable number.

30687725 is a deficient number, since it is larger than the sum of its proper divisors (7643155).

30687725 is a wasteful number, since it uses less digits than its factorization.

30687725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8980 (or 8975 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 30687725 is about 5539.6502597186. The cubic root of 30687725 is about 313.0796919981.

The spelling of 30687725 in words is "thirty million, six hundred eighty-seven thousand, seven hundred twenty-five".