30770720 has 24 divisors (see below), whose sum is σ = 72696204. Its totient is φ = 12308224.

The previous prime is 30770713. The next prime is 30770749. The reversal of 30770720 is 2707703.

It can be written as a sum of positive squares in 2 ways, for example, as 29203216 + 1567504 = 5404^2 + 1252^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30770720.

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, 95999 + ... + 96318.

Almost surely, 2^30770720 is an apocalyptic number.

It is an amenable number.

30770720 is an abundant number, since it is smaller than the sum of its proper divisors (41925484).

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

30770720 is a wasteful number, since it uses less digits than its factorization.

30770720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192332 (or 192324 counting only the distinct ones).

The product of its (nonzero) digits is 2058, while the sum is 26.

The square root of 30770720 is about 5547.1361980755. The cubic root of 30770720 is about 313.3616794435.

The spelling of 30770720 in words is "thirty million, seven hundred seventy thousand, seven hundred twenty".