2722345 has 8 divisors (see below), whose sum is σ = 3328776. Its totient is φ = 2136576.

The previous prime is 2722337. The next prime is 2722351. The reversal of 2722345 is 5432272.

It can be written as a sum of positive squares in 4 ways, for example, as 222784 + 2499561 = 472^2 + 1581^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2722345 - 2³ = 2722337 is a prime.

It is a super-2 number, since 2×2722345² = 14822324598050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4872 + ... + 5401.

It is an arithmetic number, because the mean of its divisors is an integer number (416097).

2^2722345 is an apocalyptic number.

It is an amenable number.

2722345 is a deficient number, since it is larger than the sum of its proper divisors (606431).

2722345 is a wasteful number, since it uses less digits than its factorization.

2722345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10331.

The product of its digits is 3360, while the sum is 25.

The square root of 2722345 is about 1649.9530296345. The cubic root of 2722345 is about 139.6307446181.

The spelling of 2722345 in words is "two million, seven hundred twenty-two thousand, three hundred forty-five".