12724390 has 16 divisors (see below), whose sum is σ = 26176032. Its totient is φ = 4362624.

The previous prime is 12724351. The next prime is 12724421. The reversal of 12724390 is 9342721.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90819 + ... + 90958.

It is an arithmetic number, because the mean of its divisors is an integer number (1636002).

Almost surely, 2^12724390 is an apocalyptic number.

12724390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12724390 is an abundant number, since it is smaller than the sum of its proper divisors (13451642).

12724390 is a wasteful number, since it uses less digits than its factorization.

12724390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181791.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 12724390 is about 3567.1262943720. The cubic root of 12724390 is about 233.4599154444.

The spelling of 12724390 in words is "twelve million, seven hundred twenty-four thousand, three hundred ninety".