2400402056 has 16 divisors (see below), whose sum is σ = 4846965900. Its totient is φ = 1107877824.

The previous prime is 2400402049. The next prime is 2400402073. The reversal of 2400402056 is 6502040042.

It can be written as a sum of positive squares in 2 ways, for example, as 2392188100 + 8213956 = 48910^2 + 2866^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11540291 + ... + 11540498.

Almost surely, 2^2400402056 is an apocalyptic number.

2400402056 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2400402056 is an abundant number, since it is smaller than the sum of its proper divisors (2446563844).

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

2400402056 is a wasteful number, since it uses less digits than its factorization.

2400402056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23080808 (or 23080804 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 2400402056 is about 48993.8981506881. The cubic root of 2400402056 is about 1338.9406597493.

Adding to 2400402056 its reverse (6502040042), we get a palindrome (8902442098).

The spelling of 2400402056 in words is "two billion, four hundred million, four hundred two thousand, fifty-six".