12309790 has 16 divisors (see below), whose sum is σ = 22872960. Its totient is φ = 4764960.

The previous prime is 12309769. The next prime is 12309797. The reversal of 12309790 is 9790321.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12309797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19545 + ... + 20164.

It is an arithmetic number, because the mean of its divisors is an integer number (1429560).

Almost surely, 2^12309790 is an apocalyptic number.

12309790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12309790 is a deficient number, since it is larger than the sum of its proper divisors (10563170).

12309790 is a wasteful number, since it uses less digits than its factorization.

12309790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39747.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 12309790 is about 3508.5310316427. The cubic root of 12309790 is about 230.8962509558.

The spelling of 12309790 in words is "twelve million, three hundred nine thousand, seven hundred ninety".