2722491 has 40 divisors (see below), whose sum is σ = 4501200. Its totient is φ = 1632960.

The previous prime is 2722477. The next prime is 2722507. The reversal of 2722491 is 1942272.

It is not a de Polignac number, because 2722491 - 2⁶ = 2722427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

Its product of digits (2016) is a multiple of the sum of its prime divisors (112).

It is not an unprimeable number, because it can be changed into a prime (2722471) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 44601 + ... + 44661.

It is an arithmetic number, because the mean of its divisors is an integer number (112530).

2^2722491 is an apocalyptic number.

2722491 is a deficient number, since it is larger than the sum of its proper divisors (1778709).

2722491 is a wasteful number, since it uses less digits than its factorization.

2722491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121 (or 112 counting only the distinct ones).

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

The square root of 2722491 is about 1649.9972727250. The cubic root of 2722491 is about 139.6332407166.

The spelling of 2722491 in words is "two million, seven hundred twenty-two thousand, four hundred ninety-one".