2656400396 has 24 divisors (see below), whose sum is σ = 5020273440. Its totient is φ = 1222607232.

The previous prime is 2656400371. The next prime is 2656400407. The reversal of 2656400396 is 6930046562.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52481 + ... + 89816.

It is an arithmetic number, because the mean of its divisors is an integer number (209178060).

Almost surely, 2^2656400396 is an apocalyptic number.

2656400396 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2656400396 is a deficient number, since it is larger than the sum of its proper divisors (2363873044).

2656400396 is a wasteful number, since it uses less digits than its factorization.

2656400396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142673 (or 142671 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 41.

The square root of 2656400396 is about 51540.2793550830. The cubic root of 2656400396 is about 1384.9407014975.

The spelling of 2656400396 in words is "two billion, six hundred fifty-six million, four hundred thousand, three hundred ninety-six".