12653738 has 4 divisors (see below), whose sum is σ = 18980610. Its totient is φ = 6326868.

The previous prime is 12653737. The next prime is 12653759. The reversal of 12653738 is 83735621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 12623809 + 29929 = 3553^2 + 173^2 .

It is a junction number, because it is equal to n+sod(n) for n = 12653698 and 12653707.

It is not an unprimeable number, because it can be changed into a prime (12653737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3163433 + ... + 3163436.

Almost surely, 2^12653738 is an apocalyptic number.

12653738 is a deficient number, since it is larger than the sum of its proper divisors (6326872).

12653738 is an equidigital number, since it uses as much as digits as its factorization.

12653738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6326871.

The product of its digits is 30240, while the sum is 35.

The square root of 12653738 is about 3557.2092994368. The cubic root of 12653738 is about 233.0270189154.

The spelling of 12653738 in words is "twelve million, six hundred fifty-three thousand, seven hundred thirty-eight".