2791215 has 24 divisors (see below), whose sum is σ = 5529888. Its totient is φ = 1275840.

The previous prime is 2791199. The next prime is 2791237. The reversal of 2791215 is 5121972.

It is not a de Polignac number, because 2791215 - 2⁴ = 2791199 is a prime.

2791215 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4116 + ... + 4745.

It is an arithmetic number, because the mean of its divisors is an integer number (230412).

2^2791215 is an apocalyptic number.

2791215 is a deficient number, since it is larger than the sum of its proper divisors (2738673).

2791215 is a wasteful number, since it uses less digits than its factorization.

2791215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8879 (or 8876 counting only the distinct ones).

The product of its digits is 1260, while the sum is 27.

The square root of 2791215 is about 1670.6929699978. The cubic root of 2791215 is about 140.7984142114.

The spelling of 2791215 in words is "two million, seven hundred ninety-one thousand, two hundred fifteen".