2797740 has 120 divisors (see below), whose sum is σ = 9635472. Its totient is φ = 673920.

The previous prime is 2797733. The next prime is 2797757. The reversal of 2797740 is 477972.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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 = 2797695 and 2797704.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 17742 + ... + 17898.

2^2797740 is an apocalyptic number.

2797740 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 2797740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4817736).

2797740 is an abundant number, since it is smaller than the sum of its proper divisors (6837732).

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

2797740 is a wasteful number, since it uses less digits than its factorization.

2797740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 2797740 is about 1672.6446125821. The cubic root of 2797740 is about 140.9080432552.

The spelling of 2797740 in words is "two million, seven hundred ninety-seven thousand, seven hundred forty".