2731490 has 8 divisors (see below), whose sum is σ = 4916700. Its totient is φ = 1092592.

The previous prime is 2731429. The next prime is 2731493. The reversal of 2731490 is 941372.

It can be written as a sum of positive squares in 2 ways, for example, as 2699449 + 32041 = 1643^2 + 179^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2731490² = 14922075240200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2731493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136565 + ... + 136584.

2^2731490 is an apocalyptic number.

2731490 is a deficient number, since it is larger than the sum of its proper divisors (2185210).

2731490 is a wasteful number, since it uses less digits than its factorization.

2731490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273156.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 2731490 is about 1652.7219971913. The cubic root of 2731490 is about 139.7869207570.

The spelling of 2731490 in words is "two million, seven hundred thirty-one thousand, four hundred ninety".