12431790 has 72 divisors (see below), whose sum is σ = 37613160. Its totient is φ = 2840544.

The previous prime is 12431767. The next prime is 12431801. The reversal of 12431790 is 9713421.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3001 + ... + 5819.

It is an arithmetic number, because the mean of its divisors is an integer number (522405).

Almost surely, 2^12431790 is an apocalyptic number.

12431790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 12431790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18806580).

12431790 is an abundant number, since it is smaller than the sum of its proper divisors (25181370).

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

12431790 is a wasteful number, since it uses less digits than its factorization.

12431790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2846 (or 2836 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 12431790 is about 3525.8743596447. The cubic root of 12431790 is about 231.6565344728.

The spelling of 12431790 in words is "twelve million, four hundred thirty-one thousand, seven hundred ninety".