2558040 has 32 divisors (see below), whose sum is σ = 7674480. Its totient is φ = 682112.

The previous prime is 2558029. The next prime is 2558047. The reversal of 2558040 is 408552.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

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 2558040.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2558047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10539 + ... + 10778.

2^2558040 is an apocalyptic number.

2558040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2558040 is an abundant number, since it is smaller than the sum of its proper divisors (5116440).

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

2558040 is a wasteful number, since it uses less digits than its factorization.

2558040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21331 (or 21327 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 2558040 is about 1599.3873827188. The cubic root of 2558040 is about 136.7631548116.

The spelling of 2558040 in words is "two million, five hundred fifty-eight thousand, forty".