12723494 has 8 divisors (see below), whose sum is σ = 21811728. Its totient is φ = 5452920.

The previous prime is 12723481. The next prime is 12723509. The reversal of 12723494 is 49432721.

12723494 = 1782² + 1783² + ... + 1785².

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

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12723494.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454397 + ... + 454424.

It is an arithmetic number, because the mean of its divisors is an integer number (2726466).

Almost surely, 2^12723494 is an apocalyptic number.

12723494 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12723494 is a deficient number, since it is larger than the sum of its proper divisors (9088234).

12723494 is an equidigital number, since it uses as much as digits as its factorization.

12723494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908830.

The product of its digits is 12096, while the sum is 32.

The square root of 12723494 is about 3567.0007008690. Note that the first 3 decimals coincide. The cubic root of 12723494 is about 233.4544355486.

The spelling of 12723494 in words is "twelve million, seven hundred twenty-three thousand, four hundred ninety-four".