2499820 has 12 divisors (see below), whose sum is σ = 5249664. Its totient is φ = 999920.

The previous prime is 2499803. The next prime is 2499821. The reversal of 2499820 is 289942.

It is not an unprimeable number, because it can be changed into a prime (2499821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62476 + ... + 62515.

It is an arithmetic number, because the mean of its divisors is an integer number (437472).

2^2499820 is an apocalyptic number.

2499820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2499820 is an abundant number, since it is smaller than the sum of its proper divisors (2749844).

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

2499820 is a wasteful number, since it uses less digits than its factorization.

2499820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125000 (or 124998 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 2499820 is about 1581.0819080617. The cubic root of 2499820 is about 135.7176234504.

The spelling of 2499820 in words is "two million, four hundred ninety-nine thousand, eight hundred twenty".