30709768 has 16 divisors (see below), whose sum is σ = 57670380. Its totient is φ = 15331008.

The previous prime is 30709711. The next prime is 30709771. The reversal of 30709768 is 86790703.

It can be written as a sum of positive squares in 2 ways, for example, as 23213124 + 7496644 = 4818^2 + 2738^2 .

It is a super-2 number, since 2×30709768² = 1886179701227648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 30709768.

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, 3246 + ... + 8482.

Almost surely, 2^30709768 is an apocalyptic number.

It is an amenable number.

30709768 is a deficient number, since it is larger than the sum of its proper divisors (26960612).

30709768 is a wasteful number, since it uses less digits than its factorization.

30709768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5976 (or 5972 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 30709768 is about 5541.6394686049. The cubic root of 30709768 is about 313.1546357954.

The spelling of 30709768 in words is "thirty million, seven hundred nine thousand, seven hundred sixty-eight".