12351988 has 36 divisors (see below), whose sum is σ = 24314976. Its totient is φ = 5444800.

The previous prime is 12351971. The next prime is 12351991. The reversal of 12351988 is 88915321.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73881 + ... + 74047.

It is an arithmetic number, because the mean of its divisors is an integer number (675416).

Almost surely, 2^12351988 is an apocalyptic number.

It is an amenable number.

12351988 is a deficient number, since it is larger than the sum of its proper divisors (11962988).

12351988 is a wasteful number, since it uses less digits than its factorization.

12351988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 221 counting only the distinct ones).

The product of its digits is 17280, while the sum is 37.

The square root of 12351988 is about 3514.5395146448. The cubic root of 12351988 is about 231.1597877486.

It can be divided in two parts, 1235 and 1988, that added together give a palindrome (3223).

The spelling of 12351988 in words is "twelve million, three hundred fifty-one thousand, nine hundred eighty-eight".