2526640 has 20 divisors (see below), whose sum is σ = 5874624. Its totient is φ = 1010624.

The previous prime is 2526631. The next prime is 2526647. The reversal of 2526640 is 466252.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (2526647) 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, 15712 + ... + 15871.

2^2526640 is an apocalyptic number.

2526640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2526640 is an abundant number, since it is smaller than the sum of its proper divisors (3347984).

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

2526640 is a wasteful number, since it uses less digits than its factorization.

2526640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31596 (or 31590 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 2526640 is about 1589.5408141976. The cubic root of 2526640 is about 136.2012591139.

The spelling of 2526640 in words is "two million, five hundred twenty-six thousand, six hundred forty".