12581922 has 8 divisors (see below), whose sum is σ = 25163856. Its totient is φ = 4193972.

The previous prime is 12581917. The next prime is 12581923. The reversal of 12581922 is 22918521.

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

12581922 is an admirable number.

It is a super-2 number, since 2×12581922² = 316609522428168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12581922.

It is not an unprimeable number, because it can be changed into a prime (12581923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1048488 + ... + 1048499.

It is an arithmetic number, because the mean of its divisors is an integer number (3145482).

Almost surely, 2^12581922 is an apocalyptic number.

12581922 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

12581922 is a wasteful number, since it uses less digits than its factorization.

12581922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2096992.

The product of its digits is 2880, while the sum is 30.

The square root of 12581922 is about 3547.1005060472. The cubic root of 12581922 is about 232.5853357694.

The spelling of 12581922 in words is "twelve million, five hundred eighty-one thousand, nine hundred twenty-two".