13768738 has 4 divisors (see below), whose sum is σ = 20653110. Its totient is φ = 6884368.

The previous prime is 13768721. The next prime is 13768747. The reversal of 13768738 is 83786731.

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., 10936249 + 2832489 = 3307^2 + 1683^2 .

It is a super-2 number, since 2×13768738² = 379156292225288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 13768694 and 13768703.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3442183 + ... + 3442186.

Almost surely, 2^13768738 is an apocalyptic number.

13768738 is a deficient number, since it is larger than the sum of its proper divisors (6884372).

13768738 is an equidigital number, since it uses as much as digits as its factorization.

13768738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884371.

The product of its digits is 169344, while the sum is 43.

The square root of 13768738 is about 3710.6250147381. The cubic root of 13768738 is about 239.6797696682.

The spelling of 13768738 in words is "thirteen million, seven hundred sixty-eight thousand, seven hundred thirty-eight".