2540736 has 84 divisors (see below), whose sum is σ = 7964424. Its totient is φ = 768000.

The previous prime is 2540723. The next prime is 2540743. The reversal of 2540736 is 6370452.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6136 + ... + 6536.

2^2540736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2540736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3982212).

2540736 is an abundant number, since it is smaller than the sum of its proper divisors (5423688).

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

2540736 is a wasteful number, since it uses less digits than its factorization.

2540736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 2540736 is about 1593.9686320628. The cubic root of 2540736 is about 136.4540762471.

The spelling of 2540736 in words is "two million, five hundred forty thousand, seven hundred thirty-six".