2797578240 has 192 divisors, whose sum is σ = 9423086400. Its totient is φ = 706609152.

The previous prime is 2797578209. The next prime is 2797578269. The reversal of 2797578240 is 428757972.

It is a tau number, because it is divible by the number of its divisors (192).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 581284 + ... + 586076.

It is an arithmetic number, because the mean of its divisors is an integer number (49078575).

Almost surely, 2^2797578240 is an apocalyptic number.

2797578240 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 2797578240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4711543200).

2797578240 is an abundant number, since it is smaller than the sum of its proper divisors (6625508160).

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

2797578240 is a wasteful number, since it uses less digits than its factorization.

2797578240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4842 (or 4822 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 51.

The square root of 2797578240 is about 52892.1377900345. The cubic root of 2797578240 is about 1409.0532752463.

The spelling of 2797578240 in words is "two billion, seven hundred ninety-seven million, five hundred seventy-eight thousand, two hundred forty".