2872491 has 16 divisors (see below), whose sum is σ = 4021248. Its totient is φ = 1821600.

The previous prime is 2872481. The next prime is 2872523. The reversal of 2872491 is 1942782.

2872491 = 184² + 185² + ... + 245².

It is a happy number.

It is not a de Polignac number, because 2872491 - 2⁵ = 2872459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2872451) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 6001 + ... + 6461.

It is an arithmetic number, because the mean of its divisors is an integer number (251328).

2^2872491 is an apocalyptic number.

2872491 is a deficient number, since it is larger than the sum of its proper divisors (1148757).

2872491 is a wasteful number, since it uses less digits than its factorization.

2872491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562.

The product of its digits is 8064, while the sum is 33.

The square root of 2872491 is about 1694.8424705559. The cubic root of 2872491 is about 142.1519731149.

The spelling of 2872491 in words is "two million, eight hundred seventy-two thousand, four hundred ninety-one".