12813026 has 8 divisors (see below), whose sum is σ = 19739100. Its totient is φ = 6233328.

The previous prime is 12813023. The next prime is 12813037. The reversal of 12813026 is 62031821.

It can be written as a sum of positive squares in 2 ways, for example, as 12243001 + 570025 = 3499^2 + 755^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12812992 and 12813010.

It is not an unprimeable number, because it can be changed into a prime (12813023) 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, 86501 + ... + 86648.

Almost surely, 2^12813026 is an apocalyptic number.

12813026 is a deficient number, since it is larger than the sum of its proper divisors (6926074).

12813026 is a wasteful number, since it uses less digits than its factorization.

12813026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173188.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 12813026 is about 3579.5287399321. The cubic root of 12813026 is about 234.0007426864. Note that the first 3 decimals are identical.

Adding to 12813026 its reverse (62031821), we get a palindrome (74844847).

The spelling of 12813026 in words is "twelve million, eight hundred thirteen thousand, twenty-six".