2731136 has 32 divisors (see below), whose sum is σ = 5732400. Its totient is φ = 1292544.

The previous prime is 2731129. The next prime is 2731147. The reversal of 2731136 is 6311372.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1871 + ... + 2993.

2^2731136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2731136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2866200).

2731136 is an abundant number, since it is smaller than the sum of its proper divisors (3001264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2731136 is a wasteful number, since it uses less digits than its factorization.

2731136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156 (or 1144 counting only the distinct ones).

The product of its digits is 756, while the sum is 23.

The square root of 2731136 is about 1652.6148976698. The cubic root of 2731136 is about 139.7808817200.

The spelling of 2731136 in words is "two million, seven hundred thirty-one thousand, one hundred thirty-six".