2570040 has 144 divisors (see below), whose sum is σ = 9336600. Its totient is φ = 612480.

The previous prime is 2570017. The next prime is 2570047. The reversal of 2570040 is 400752.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2569995 and 2570022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2570047) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 43531 + ... + 43589.

2^2570040 is an apocalyptic number.

2570040 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 2570040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4668300).

2570040 is an abundant number, since it is smaller than the sum of its proper divisors (6766560).

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

2570040 is a wasteful number, since it uses less digits than its factorization.

2570040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 80 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 18.

The square root of 2570040 is about 1603.1344297968. The cubic root of 2570040 is about 136.9766774371.

Adding to 2570040 its reverse (400752), we get a palindrome (2970792).

The spelling of 2570040 in words is "two million, five hundred seventy thousand, forty".