2731288 has 64 divisors (see below), whose sum is σ = 6566400. Its totient is φ = 1036800.

The previous prime is 2731279. The next prime is 2731291. The reversal of 2731288 is 8821372.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18013 + ... + 18163.

It is an arithmetic number, because the mean of its divisors is an integer number (102600).

2^2731288 is an apocalyptic number.

2731288 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2731288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3283200).

2731288 is an abundant number, since it is smaller than the sum of its proper divisors (3835112).

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

2731288 is a wasteful number, since it uses less digits than its factorization.

2731288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200 (or 196 counting only the distinct ones).

The product of its digits is 5376, while the sum is 31.

The square root of 2731288 is about 1652.6608847552. The cubic root of 2731288 is about 139.7834748168.

The spelling of 2731288 in words is "two million, seven hundred thirty-one thousand, two hundred eighty-eight".