30780968 has 8 divisors (see below), whose sum is σ = 57714330. Its totient is φ = 15390480.

The previous prime is 30780943. The next prime is 30780979. The reversal of 30780968 is 86908703.

It can be written as a sum of positive squares in only one way, i.e., 28536964 + 2244004 = 5342^2 + 1498^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 1923803 + ... + 1923818.

Almost surely, 2^30780968 is an apocalyptic number.

It is an amenable number.

30780968 is a deficient number, since it is larger than the sum of its proper divisors (26933362).

30780968 is a wasteful number, since it uses less digits than its factorization.

30780968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847627 (or 3847623 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 30780968 is about 5548.0598410616. The cubic root of 30780968 is about 313.3964633122.

The spelling of 30780968 in words is "thirty million, seven hundred eighty thousand, nine hundred sixty-eight".