12799998 has 32 divisors (see below), whose sum is σ = 28576800. Its totient is φ = 4246848.

The previous prime is 12799987. The next prime is 12800009. The reversal of 12799998 is 89999721.

It is an interprime number because it is at equal distance from previous prime (12799987) and next prime (12800009).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15418 + ... + 16226.

It is an arithmetic number, because the mean of its divisors is an integer number (893025).

Almost surely, 2^12799998 is an apocalyptic number.

12799998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12799998 is an abundant number, since it is smaller than the sum of its proper divisors (15776802).

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

12799998 is a wasteful number, since it uses less digits than its factorization.

12799998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113 (or 1107 counting only the distinct ones).

The product of its digits is 734832, while the sum is 54.

The square root of 12799998 is about 3577.7084844912. The cubic root of 12799998 is about 233.9214068736.

The spelling of 12799998 in words is "twelve million, seven hundred ninety-nine thousand, nine hundred ninety-eight".