2597820 has 48 divisors (see below), whose sum is σ = 7529760. Its totient is φ = 668416.

The previous prime is 2597809. The next prime is 2597857. The reversal of 2597820 is 287952.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 994 + ... + 2486.

It is an arithmetic number, because the mean of its divisors is an integer number (156870).

2^2597820 is an apocalyptic number.

2597820 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 2597820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3764880).

2597820 is an abundant number, since it is smaller than the sum of its proper divisors (4931940).

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

2597820 is a wasteful number, since it uses less digits than its factorization.

2597820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1534 (or 1532 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 2597820 is about 1611.7754185990. The cubic root of 2597820 is about 137.4684445494.

The spelling of 2597820 in words is "two million, five hundred ninety-seven thousand, eight hundred twenty".