2731408 has 20 divisors (see below), whose sum is σ = 5393628. Its totient is φ = 1339520.

The previous prime is 2731381. The next prime is 2731427. The reversal of 2731408 is 8041372.

It can be written as a sum of positive squares in 2 ways, for example, as 2039184 + 692224 = 1428^2 + 832^2 .

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, 763 + ... + 2458.

2^2731408 is an apocalyptic number.

It is an amenable number.

2731408 is a deficient number, since it is larger than the sum of its proper divisors (2662220).

2731408 is a wasteful number, since it uses less digits than its factorization.

2731408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3282 (or 3276 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 2731408 is about 1652.6971894452. The cubic root of 2731408 is about 139.7855219305.

It can be divided in two parts, 273 and 1408, that added together give a square (1681 = 41²).

The spelling of 2731408 in words is "two million, seven hundred thirty-one thousand, four hundred eight".