2491600 has 30 divisors (see below), whose sum is σ = 5987030. Its totient is φ = 996480.

The previous prime is 2491589. The next prime is 2491607. The reversal of 2491600 is 61942.

It can be written as a sum of positive squares in 3 ways, for example, as 156816 + 2334784 = 396^2 + 1528^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2491607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2715 + ... + 3514.

2^2491600 is an apocalyptic number.

2491600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2491600 is an abundant number, since it is smaller than the sum of its proper divisors (3495430).

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

2491600 is a wasteful number, since it uses less digits than its factorization.

2491600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6247 (or 6236 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 2491600 is about 1578.4802817901. The cubic root of 2491600 is about 135.5687028764.

It can be divided in two parts, 249 and 1600, that added together give a square (1849 = 43²).

The spelling of 2491600 in words is "two million, four hundred ninety-one thousand, six hundred".