12722390 has 16 divisors (see below), whose sum is σ = 22999680. Its totient is φ = 5066880.

The previous prime is 12722377. The next prime is 12722393. The reversal of 12722390 is 9322721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12722393) 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, 230 + ... + 5049.

It is an arithmetic number, because the mean of its divisors is an integer number (1437480).

Almost surely, 2^12722390 is an apocalyptic number.

12722390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12722390 is a deficient number, since it is larger than the sum of its proper divisors (10277290).

12722390 is a wasteful number, since it uses less digits than its factorization.

12722390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5527.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 12722390 is about 3566.8459456500. The cubic root of 12722390 is about 233.4476831804.

The spelling of 12722390 in words is "twelve million, seven hundred twenty-two thousand, three hundred ninety".