2722390 has 16 divisors (see below), whose sum is σ = 5346000. Its totient is φ = 989920.

The previous prime is 2722387. The next prime is 2722399. The reversal of 2722390 is 932272.

It is a super-2 number, since 2×2722390² = 14822814624200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2722399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12265 + ... + 12484.

It is an arithmetic number, because the mean of its divisors is an integer number (334125).

2^2722390 is an apocalyptic number.

2722390 is a deficient number, since it is larger than the sum of its proper divisors (2623610).

2722390 is a wasteful number, since it uses less digits than its factorization.

2722390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24767.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 2722390 is about 1649.9666663300. The cubic root of 2722390 is about 139.6315139730.

It can be divided in two parts, 272 and 2390, that added together give a palindrome (2662).

The spelling of 2722390 in words is "two million, seven hundred twenty-two thousand, three hundred ninety".