2400656390 has 16 divisors (see below), whose sum is σ = 4714016400. Its totient is φ = 872965920.

The previous prime is 2400656347. The next prime is 2400656407. The reversal of 2400656390 is 936560042.

It is a super-2 number, since 2×2400656390² = 11526302205695664200, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2400656390.

It is a congruent number.

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, 10911965 + ... + 10912184.

It is an arithmetic number, because the mean of its divisors is an integer number (294626025).

Almost surely, 2^2400656390 is an apocalyptic number.

2400656390 is a deficient number, since it is larger than the sum of its proper divisors (2313360010).

2400656390 is a wasteful number, since it uses less digits than its factorization.

2400656390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21824167.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 2400656390 is about 48996.4936500562. The cubic root of 2400656390 is about 1338.9879471203.

The spelling of 2400656390 in words is "two billion, four hundred million, six hundred fifty-six thousand, three hundred ninety".