2722815 has 36 divisors (see below), whose sum is σ = 4959864. Its totient is φ = 1434672.

The previous prime is 2722801. The next prime is 2722831. The reversal of 2722815 is 5182272.

It is not a de Polignac number, because 2722815 - 2⁴ = 2722799 is a prime.

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

It is an Ulam number.

Its product of digits (2240) is a multiple of the sum of its prime factors (112).

It is a nialpdrome in base 9 and base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 32764 + ... + 32846.

It is an arithmetic number, because the mean of its divisors is an integer number (137774).

2^2722815 is an apocalyptic number.

2722815 is a deficient number, since it is larger than the sum of its proper divisors (2237049).

2722815 is an frugal number, since it uses more digits than its factorization.

2722815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112 (or 91 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 2722815 is about 1650.0954517845. The cubic root of 2722815 is about 139.6387796851.

The spelling of 2722815 in words is "two million, seven hundred twenty-two thousand, eight hundred fifteen".