12813490 has 8 divisors (see below), whose sum is σ = 23064300. Its totient is φ = 5125392.

The previous prime is 12813487. The next prime is 12813497. The reversal of 12813490 is 9431821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12595401 + 218089 = 3549^2 + 467^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12813497) 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, 640665 + ... + 640684.

Almost surely, 2^12813490 is an apocalyptic number.

12813490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12813490 is a deficient number, since it is larger than the sum of its proper divisors (10250810).

12813490 is a wasteful number, since it uses less digits than its factorization.

12813490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1281356.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 12813490 is about 3579.5935523464. The cubic root of 12813490 is about 234.0035672868.

The spelling of 12813490 in words is "twelve million, eight hundred thirteen thousand, four hundred ninety".