2499540 has 24 divisors (see below), whose sum is σ = 6998880. Its totient is φ = 666528.

The previous prime is 2499521. The next prime is 2499551. The reversal of 2499540 is 459942.

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, 20770 + ... + 20889.

It is an arithmetic number, because the mean of its divisors is an integer number (291620).

2^2499540 is an apocalyptic number.

2499540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2499540 is an abundant number, since it is smaller than the sum of its proper divisors (4499340).

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

2499540 is a wasteful number, since it uses less digits than its factorization.

2499540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41671 (or 41669 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 2499540 is about 1580.9933586198. The cubic root of 2499540 is about 135.7125561051.

The spelling of 2499540 in words is "two million, four hundred ninety-nine thousand, five hundred forty".