2523840 has 112 divisors (see below), whose sum is σ = 8778240. Its totient is φ = 609280.

The previous prime is 2523839. The next prime is 2523863. The reversal of 2523840 is 483252.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 2523840.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10441 + ... + 10679.

2^2523840 is an apocalyptic number.

2523840 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 2523840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4389120).

2523840 is an abundant number, since it is smaller than the sum of its proper divisors (6254400).

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

2523840 is a wasteful number, since it uses less digits than its factorization.

2523840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 2523840 is about 1588.6598125464. The cubic root of 2523840 is about 136.1509281755.

The spelling of 2523840 in words is "two million, five hundred twenty-three thousand, eight hundred forty".