13491290 has 8 divisors (see below), whose sum is σ = 24284340. Its totient is φ = 5396512.

The previous prime is 13491281. The next prime is 13491301. The reversal of 13491290 is 9219431.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13490929 + 361 = 3673^2 + 19^2 .

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

It is a Curzon number.

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, 674555 + ... + 674574.

Almost surely, 2^13491290 is an apocalyptic number.

13491290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13491290 is a deficient number, since it is larger than the sum of its proper divisors (10793050).

13491290 is a wasteful number, since it uses less digits than its factorization.

13491290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349136.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 13491290 is about 3673.0491420617. The cubic root of 13491290 is about 238.0589383962.

The spelling of 13491290 in words is "thirteen million, four hundred ninety-one thousand, two hundred ninety".