2499740 has 12 divisors (see below), whose sum is σ = 5249496. Its totient is φ = 999888.

The previous prime is 2499727. The next prime is 2499751. The reversal of 2499740 is 479942.

It is a self number, because there is not a number n which added to its sum of digits gives 2499740.

It is a congruent number.

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, 62474 + ... + 62513.

It is an arithmetic number, because the mean of its divisors is an integer number (437458).

2^2499740 is an apocalyptic number.

2499740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2499740 is an abundant number, since it is smaller than the sum of its proper divisors (2749756).

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

2499740 is a wasteful number, since it uses less digits than its factorization.

2499740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124996 (or 124994 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 2499740 is about 1581.0566087272. The cubic root of 2499740 is about 135.7161756761.

The spelling of 2499740 in words is "two million, four hundred ninety-nine thousand, seven hundred forty".