12798690 has 32 divisors (see below), whose sum is σ = 30865536. Its totient is φ = 3396480.

The previous prime is 12798661. The next prime is 12798727. The reversal of 12798690 is 9689721.

It is a super-2 number, since 2×12798690² = 327612931432200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6075 + ... + 7905.

It is an arithmetic number, because the mean of its divisors is an integer number (964548).

Almost surely, 2^12798690 is an apocalyptic number.

12798690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12798690 is an abundant number, since it is smaller than the sum of its proper divisors (18066846).

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

12798690 is a wasteful number, since it uses less digits than its factorization.

12798690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 12798690 is about 3577.5256812495. The cubic root of 12798690 is about 233.9134386530.

The spelling of 12798690 in words is "twelve million, seven hundred ninety-eight thousand, six hundred ninety".