12857290 has 16 divisors (see below), whose sum is σ = 23201640. Its totient is φ = 5129920.

The previous prime is 12857279. The next prime is 12857297. The reversal of 12857290 is 9275821.

12857290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10004569 + 2852721 = 3163^2 + 1689^2 .

It is a super-2 number, since 2×12857290² = 330619812288200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12857297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3216 + ... + 6004.

Almost surely, 2^12857290 is an apocalyptic number.

12857290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12857290 is a deficient number, since it is larger than the sum of its proper divisors (10344350).

12857290 is a wasteful number, since it uses less digits than its factorization.

12857290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3257.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 12857290 is about 3585.7063460356. The cubic root of 12857290 is about 234.2698933752.

The spelling of 12857290 in words is "twelve million, eight hundred fifty-seven thousand, two hundred ninety".