2722642 has 8 divisors (see below), whose sum is σ = 4398156. Its totient is φ = 1256592.

The previous prime is 2722639. The next prime is 2722661. The reversal of 2722642 is 2462272.

It can be written as a sum of positive squares in 2 ways, for example, as 2217121 + 505521 = 1489^2 + 711^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam 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, 52333 + ... + 52384.

2^2722642 is an apocalyptic number.

2722642 is a deficient number, since it is larger than the sum of its proper divisors (1675514).

2722642 is a wasteful number, since it uses less digits than its factorization.

2722642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104732.

The product of its digits is 2688, while the sum is 25.

The square root of 2722642 is about 1650.0430297420. The cubic root of 2722642 is about 139.6358222041.

It can be divided in two parts, 2722 and 642, that added together give a square (3364 = 58²).

The spelling of 2722642 in words is "two million, seven hundred twenty-two thousand, six hundred forty-two".