2499240690 has 64 divisors (see below), whose sum is σ = 6827224320. Its totient is φ = 650206080.

The previous prime is 2499240673. The next prime is 2499240691. The reversal of 2499240690 is 960429942.

It is a happy number.

It is a super-2 number, since 2×2499240690² = 12492408053103352200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2499240691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 101814 + ... + 123953.

It is an arithmetic number, because the mean of its divisors is an integer number (106675380).

Almost surely, 2^2499240690 is an apocalyptic number.

2499240690 is an abundant number, since it is smaller than the sum of its proper divisors (4327983630).

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

2499240690 is a wasteful number, since it uses less digits than its factorization.

2499240690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225824 (or 225818 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 2499240690 is about 49992.4063233608. The cubic root of 2499240690 is about 1357.0713887546.

The spelling of 2499240690 in words is "two billion, four hundred ninety-nine million, two hundred forty thousand, six hundred ninety".