2797520 has 90 divisors (see below), whose sum is σ = 7594566. Its totient is φ = 957440.

The previous prime is 2797517. The next prime is 2797523. The reversal of 2797520 is 257972.

It is an interprime number because it is at equal distance from previous prime (2797517) and next prime (2797523).

It can be written as a sum of positive squares in 3 ways, for example, as 937024 + 1860496 = 968^2 + 1364^2 .

It is a super-2 number, since 2×2797520² = 15652236300800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2797523) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 164552 + ... + 164568.

2^2797520 is an apocalyptic number.

2797520 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 2797520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3797283).

2797520 is an abundant number, since it is smaller than the sum of its proper divisors (4797046).

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

2797520 is a wasteful number, since it uses less digits than its factorization.

2797520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69 (or 35 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 2797520 is about 1672.5788471698. The cubic root of 2797520 is about 140.9043497285.

Multiplying 2797520 by its product of nonzero digits (8820), we get a square (24674126400 = 157080²).

The spelling of 2797520 in words is "two million, seven hundred ninety-seven thousand, five hundred twenty".