30400782320 has 40 divisors (see below), whose sum is σ = 70689631824. Its totient is φ = 12158968832.

The previous prime is 30400782317. The next prime is 30400782359. The reversal of 30400782320 is 2328700403.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 1040552 + ... + 1069368.

Almost surely, 2^30400782320 is an apocalyptic number.

It is an amenable number.

30400782320 is an abundant number, since it is smaller than the sum of its proper divisors (40288849504).

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

30400782320 is a wasteful number, since it uses less digits than its factorization.

30400782320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42017 (or 42011 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The spelling of 30400782320 in words is "thirty billion, four hundred million, seven hundred eighty-two thousand, three hundred twenty".