12743690 has 16 divisors (see below), whose sum is σ = 23087592. Its totient is φ = 5064384.

The previous prime is 12743681. The next prime is 12743701. The reversal of 12743690 is 9634721.

It can be written as a sum of positive squares in 4 ways, for example, as 11377129 + 1366561 = 3373^2 + 1169^2 .

It is a super-2 number, since 2×12743690² = 324803269632200, which contains 22 as substring.

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

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, 2489 + ... + 5628.

Almost surely, 2^12743690 is an apocalyptic number.

12743690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12743690 is a deficient number, since it is larger than the sum of its proper divisors (10343902).

12743690 is a wasteful number, since it uses less digits than its factorization.

12743690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8281.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 12743690 is about 3569.8305281904. The cubic root of 12743690 is about 233.5778909808.

The spelling of 12743690 in words is "twelve million, seven hundred forty-three thousand, six hundred ninety".