2825440 has 24 divisors (see below), whose sum is σ = 6675480. Its totient is φ = 1130112.

The previous prime is 2825429. The next prime is 2825447. The reversal of 2825440 is 445282.

It is a happy number.

It is a super-2 number, since 2×2825440² = 15966222387200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2825447) 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, 8670 + ... + 8989.

It is an arithmetic number, because the mean of its divisors is an integer number (278145).

2^2825440 is an apocalyptic number.

2825440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2825440 is an abundant number, since it is smaller than the sum of its proper divisors (3850040).

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

2825440 is a wasteful number, since it uses less digits than its factorization.

2825440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17674 (or 17666 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 2825440 is about 1680.9045184067. The cubic root of 2825440 is about 141.3715532883.

The spelling of 2825440 in words is "two million, eight hundred twenty-five thousand, four hundred forty".