2721392 has 20 divisors (see below), whose sum is σ = 5341920. Its totient is φ = 1342848.

The previous prime is 2721371. The next prime is 2721401. The reversal of 2721392 is 2931272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188 + ... + 2340.

It is an arithmetic number, because the mean of its divisors is an integer number (267096).

2^2721392 is an apocalyptic number.

It is an amenable number.

2721392 is a deficient number, since it is larger than the sum of its proper divisors (2620528).

2721392 is a wasteful number, since it uses less digits than its factorization.

2721392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2240 (or 2234 counting only the distinct ones).

The product of its digits is 1512, while the sum is 26.

The square root of 2721392 is about 1649.6642082557. The cubic root of 2721392 is about 139.6144493983.

It can be divided in two parts, 2721 and 392, that added together give a palindrome (3113).

The spelling of 2721392 in words is "two million, seven hundred twenty-one thousand, three hundred ninety-two".