30660856 has 16 divisors (see below), whose sum is σ = 58136400. Its totient is φ = 15157824.

The previous prime is 30660841. The next prime is 30660881. The reversal of 30660856 is 65806603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20820 + ... + 22243.

It is an arithmetic number, because the mean of its divisors is an integer number (3633525).

Almost surely, 2^30660856 is an apocalyptic number.

It is an amenable number.

30660856 is a deficient number, since it is larger than the sum of its proper divisors (27475544).

30660856 is a wasteful number, since it uses less digits than its factorization.

30660856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43158 (or 43154 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 30660856 is about 5537.2245755432. The cubic root of 30660856 is about 312.9882917769.

The spelling of 30660856 in words is "thirty million, six hundred sixty thousand, eight hundred fifty-six".