2398992640 has 72 divisors (see below), whose sum is σ = 6268768128. Its totient is φ = 872355840.

The previous prime is 2398992637. The next prime is 2398992647. The reversal of 2398992640 is 462998932.

It is a happy number.

2398992640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (2398992647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71112 + ... + 99271.

It is an arithmetic number, because the mean of its divisors is an integer number (87066224).

Almost surely, 2^2398992640 is an apocalyptic number.

2398992640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2398992640 is an abundant number, since it is smaller than the sum of its proper divisors (3869775488).

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

2398992640 is a wasteful number, since it uses less digits than its factorization.

2398992640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170415 (or 170401 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 52.

The square root of 2398992640 is about 48979.5124516363. The cubic root of 2398992640 is about 1338.6785517340.

The spelling of 2398992640 in words is "two billion, three hundred ninety-eight million, nine hundred ninety-two thousand, six hundred forty".