2731390 has 16 divisors (see below), whose sum is σ = 5206032. Its totient is φ = 1028224.

The previous prime is 2731381. The next prime is 2731427. The reversal of 2731390 is 931372.

It is a cake number, because a cake can be divided into 2731390 parts by 254 planar cuts.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7864 + ... + 8203.

It is an arithmetic number, because the mean of its divisors is an integer number (325377).

2^2731390 is an apocalyptic number.

2731390 is a deficient number, since it is larger than the sum of its proper divisors (2474642).

2731390 is a wasteful number, since it uses less digits than its factorization.

2731390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16091.

The product of its (nonzero) digits is 1134, while the sum is 25.

The square root of 2731390 is about 1652.6917437925. The cubic root of 2731390 is about 139.7852148672.

The spelling of 2731390 in words is "two million, seven hundred thirty-one thousand, three hundred ninety".