2591228 has 12 divisors (see below), whose sum is σ = 4681152. Its totient is φ = 1253760.

The previous prime is 2591213. The next prime is 2591233. The reversal of 2591228 is 8221952.

It is a self number, because there is not a number n which added to its sum of digits gives 2591228.

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 3 ways as a sum of consecutive naturals, for example, 10325 + ... + 10572.

It is an arithmetic number, because the mean of its divisors is an integer number (390096).

2^2591228 is an apocalyptic number.

It is an amenable number.

2591228 is a deficient number, since it is larger than the sum of its proper divisors (2089924).

2591228 is a wasteful number, since it uses less digits than its factorization.

2591228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20932 (or 20930 counting only the distinct ones).

The product of its digits is 2880, while the sum is 29.

The square root of 2591228 is about 1609.7291697674. The cubic root of 2591228 is about 137.3520701072.

The spelling of 2591228 in words is "two million, five hundred ninety-one thousand, two hundred twenty-eight".