2791044 has 48 divisors (see below), whose sum is σ = 7416640. Its totient is φ = 907200.

The previous prime is 2791039. The next prime is 2791051. The reversal of 2791044 is 4401972.

It is a happy number.

It is a Smith number, since the sum of its digits (27) 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 (27).

It is a junction number, because it is equal to n+sod(n) for n = 2790999 and 2791017.

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, 4344 + ... + 4944.

2^2791044 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2791044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3708320).

2791044 is an abundant number, since it is smaller than the sum of its proper divisors (4625596).

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

2791044 is a wasteful number, since it uses less digits than its factorization.

2791044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657 (or 649 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 2791044 is about 1670.6417928449. The cubic root of 2791044 is about 140.7955388781.

The spelling of 2791044 in words is "two million, seven hundred ninety-one thousand, forty-four".