2499237440 has 56 divisors (see below), whose sum is σ = 6801502272. Its totient is φ = 856880640.

The previous prime is 2499237427. The next prime is 2499237449. The reversal of 2499237440 is 447329942.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 2499237391 and 2499237400.

It is not an unprimeable number, because it can be changed into a prime (2499237449) 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, 555626 + ... + 560105.

Almost surely, 2^2499237440 is an apocalyptic number.

2499237440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2499237440 is an abundant number, since it is smaller than the sum of its proper divisors (4302264832).

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

2499237440 is a wasteful number, since it uses less digits than its factorization.

2499237440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115755 (or 1115745 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 44.

The square root of 2499237440 is about 49992.3738184135. The cubic root of 2499237440 is about 1357.0708005114.

The spelling of 2499237440 in words is "two billion, four hundred ninety-nine million, two hundred thirty-seven thousand, four hundred forty".