2580740 has 12 divisors (see below), whose sum is σ = 5419596. Its totient is φ = 1032288.

The previous prime is 2580737. The next prime is 2580749. The reversal of 2580740 is 470852.

2580740 = 83² + 84² + ... + 202².

It can be written as a sum of positive squares in 2 ways, for example, as 1674436 + 906304 = 1294^2 + 952^2 .

It is not an unprimeable number, because it can be changed into a prime (2580749) 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, 64499 + ... + 64538.

It is an arithmetic number, because the mean of its divisors is an integer number (451633).

2^2580740 is an apocalyptic number.

2580740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2580740 is an abundant number, since it is smaller than the sum of its proper divisors (2838856).

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

2580740 is a wasteful number, since it uses less digits than its factorization.

2580740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129046 (or 129044 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 2580740 is about 1606.4681758441. The cubic root of 2580740 is about 137.1665086110.

The spelling of 2580740 in words is "two million, five hundred eighty thousand, seven hundred forty".