3122957640 has 128 divisors (see below), whose sum is σ = 10316574720. Its totient is φ = 749971200.

The previous prime is 3122957567. The next prime is 3122957653. The reversal of 3122957640 is 467592213.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130185 + ... + 152295.

It is an arithmetic number, because the mean of its divisors is an integer number (80598240).

Almost surely, 2^3122957640 is an apocalyptic number.

3122957640 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3122957640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5158287360).

3122957640 is an abundant number, since it is smaller than the sum of its proper divisors (7193617080).

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

3122957640 is a wasteful number, since it uses less digits than its factorization.

3122957640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22243 (or 22239 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 3122957640 is about 55883.4290286486. The cubic root of 3122957640 is about 1461.6902985289.

The spelling of 3122957640 in words is "three billion, one hundred twenty-two million, nine hundred fifty-seven thousand, six hundred forty".