12281798 has 8 divisors (see below), whose sum is σ = 18437760. Its totient is φ = 6135880.

The previous prime is 12281767. The next prime is 12281813. The reversal of 12281798 is 89718221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×12281798² = 301685124225608, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2768 + ... + 5676.

It is an arithmetic number, because the mean of its divisors is an integer number (2304720).

Almost surely, 2^12281798 is an apocalyptic number.

12281798 is a deficient number, since it is larger than the sum of its proper divisors (6155962).

12281798 is a wasteful number, since it uses less digits than its factorization.

12281798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5022.

The product of its digits is 16128, while the sum is 38.

The square root of 12281798 is about 3504.5396273976. The cubic root of 12281798 is about 230.7211016609.

The spelling of 12281798 in words is "twelve million, two hundred eighty-one thousand, seven hundred ninety-eight".