2499860 has 36 divisors (see below), whose sum is σ = 5775924. Its totient is φ = 908160.

The previous prime is 2499859. The next prime is 2499863. The reversal of 2499860 is 689942.

It can be written as a sum of positive squares in 2 ways, for example, as 1800964 + 698896 = 1342^2 + 836^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2499863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1904 + ... + 2936.

2^2499860 is an apocalyptic number.

2499860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2499860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2887962).

2499860 is an abundant number, since it is smaller than the sum of its proper divisors (3276064).

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

2499860 is a wasteful number, since it uses less digits than its factorization.

2499860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064 (or 1051 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2499860 is about 1581.0945575771. The cubic root of 2499860 is about 135.7183473260.

The spelling of 2499860 in words is "two million, four hundred ninety-nine thousand, eight hundred sixty".