12259998 has 20 divisors (see below), whose sum is σ = 27471840. Its totient is φ = 4086612.

The previous prime is 12259981. The next prime is 12260033. The reversal of 12259998 is 89995221.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 37678 + ... + 38001.

It is an arithmetic number, because the mean of its divisors is an integer number (1373592).

Almost surely, 2^12259998 is an apocalyptic number.

12259998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12259998 is an abundant number, since it is smaller than the sum of its proper divisors (15211842).

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

12259998 is an equidigital number, since it uses as much as digits as its factorization.

12259998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75693 (or 75684 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 12259998 is about 3501.4279944046. The cubic root of 12259998 is about 230.5845120279.

The spelling of 12259998 in words is "twelve million, two hundred fifty-nine thousand, nine hundred ninety-eight".