2597940 has 96 divisors (see below), whose sum is σ = 8588160. Its totient is φ = 649728.

The previous prime is 2597939. The next prime is 2597953. The reversal of 2597940 is 497952.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2597895 and 2597904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9039 + ... + 9321.

It is an arithmetic number, because the mean of its divisors is an integer number (89460).

2^2597940 is an apocalyptic number.

2597940 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 2597940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4294080).

2597940 is an abundant number, since it is smaller than the sum of its proper divisors (5990220).

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

2597940 is a wasteful number, since it uses less digits than its factorization.

2597940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 2597940 is about 1611.8126441991. The cubic root of 2597940 is about 137.4705611907.

The spelling of 2597940 in words is "two million, five hundred ninety-seven thousand, nine hundred forty".