12281379 has 24 divisors (see below), whose sum is σ = 18794496. Its totient is φ = 7114800.

The previous prime is 12281341. The next prime is 12281389. The reversal of 12281379 is 97318221.

It is not a de Polignac number, because 12281379 - 2⁷ = 12281251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (12281329) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 7614 + ... + 9084.

It is an arithmetic number, because the mean of its divisors is an integer number (783104).

Almost surely, 2^12281379 is an apocalyptic number.

12281379 is a deficient number, since it is larger than the sum of its proper divisors (6513117).

12281379 is a wasteful number, since it uses less digits than its factorization.

12281379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519 (or 1508 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 12281379 is about 3504.4798472812. The cubic root of 12281379 is about 230.7184779072.

The spelling of 12281379 in words is "twelve million, two hundred eighty-one thousand, three hundred seventy-nine".