30297977440 has 48 divisors (see below), whose sum is σ = 72101498112. Its totient is φ = 12030721024.

The previous prime is 30297977431. The next prime is 30297977443. The reversal of 30297977440 is 4477979203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30297977443) by changing a digit.

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, 669184 + ... + 713023.

It is an arithmetic number, because the mean of its divisors is an integer number (1502114544).

Almost surely, 2^30297977440 is an apocalyptic number.

It is an amenable number.

30297977440 is an abundant number, since it is smaller than the sum of its proper divisors (41803520672).

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

30297977440 is a wasteful number, since it uses less digits than its factorization.

30297977440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382359 (or 1382351 counting only the distinct ones).

The product of its (nonzero) digits is 2667168, while the sum is 52.

The spelling of 30297977440 in words is "thirty billion, two hundred ninety-seven million, nine hundred seventy-seven thousand, four hundred forty".