30772768 has 24 divisors (see below), whose sum is σ = 65245068. Its totient is φ = 14202624.

The previous prime is 30772757. The next prime is 30772769. The reversal of 30772768 is 86727703.

It can be written as a sum of positive squares in 2 ways, for example, as 30603024 + 169744 = 5532^2 + 412^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30772768.

It is not an unprimeable number, because it can be changed into a prime (30772769) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36571 + ... + 37402.

Almost surely, 2^30772768 is an apocalyptic number.

It is an amenable number.

30772768 is an abundant number, since it is smaller than the sum of its proper divisors (34472300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30772768 is a wasteful number, since it uses less digits than its factorization.

30772768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73996 (or 73988 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 40.

The square root of 30772768 is about 5547.3207947621. The cubic root of 30772768 is about 313.3686314039.

The spelling of 30772768 in words is "thirty million, seven hundred seventy-two thousand, seven hundred sixty-eight".