30780840272 has 80 divisors (see below), whose sum is σ = 73433549952. Its totient is φ = 12171548160.

The previous prime is 30780840257. The next prime is 30780840281. The reversal of 30780840272 is 27204808703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5117747 + ... + 5123757.

Almost surely, 2^30780840272 is an apocalyptic number.

It is an amenable number.

30780840272 is an abundant number, since it is smaller than the sum of its proper divisors (42652709680).

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

30780840272 is a wasteful number, since it uses less digits than its factorization.

30780840272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9556 (or 9550 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 41.

The spelling of 30780840272 in words is "thirty billion, seven hundred eighty million, eight hundred forty thousand, two hundred seventy-two".