2597379840 has 432 divisors, whose sum is σ = 9948556800. Its totient is φ = 620421120.

The previous prime is 2597379797. The next prime is 2597379871. The reversal of 2597379840 is 489737952.

2597379840 is a `hidden beast` number, since 2 + 597 + 3 + 7 + 9 + 8 + 40 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13052061 + ... + 13052259.

Almost surely, 2^2597379840 is an apocalyptic number.

2597379840 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 2597379840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4974278400).

2597379840 is an abundant number, since it is smaller than the sum of its proper divisors (7351176960).

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

2597379840 is a wasteful number, since it uses less digits than its factorization.

2597379840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 3810240, while the sum is 54.

The square root of 2597379840 is about 50964.4958770319. The cubic root of 2597379840 is about 1374.6068015101.

The spelling of 2597379840 in words is "two billion, five hundred ninety-seven million, three hundred seventy-nine thousand, eight hundred forty".