12897090 has 64 divisors (see below), whose sum is σ = 35349120. Its totient is φ = 3343680.

The previous prime is 12897077. The next prime is 12897091. The reversal of 12897090 is 9079821.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12897091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9345 + ... + 10635.

It is an arithmetic number, because the mean of its divisors is an integer number (552330).

Almost surely, 2^12897090 is an apocalyptic number.

12897090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12897090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17674560).

12897090 is an abundant number, since it is smaller than the sum of its proper divisors (22452030).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12897090 is a wasteful number, since it uses less digits than its factorization.

12897090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344 (or 1338 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 12897090 is about 3591.2518708662. The cubic root of 12897090 is about 234.5113734344.

The spelling of 12897090 in words is "twelve million, eight hundred ninety-seven thousand, ninety".