13000738 has 4 divisors (see below), whose sum is σ = 19501110. Its totient is φ = 6500368.

The previous prime is 13000723. The next prime is 13000751. The reversal of 13000738 is 83700031.

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., 9878449 + 3122289 = 3143^2 + 1767^2 .

13000738 is a modest number, since divided by 738 gives 130 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3250183 + ... + 3250186.

Almost surely, 2^13000738 is an apocalyptic number.

13000738 is a deficient number, since it is larger than the sum of its proper divisors (6500372).

13000738 is an equidigital number, since it uses as much as digits as its factorization.

13000738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6500371.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 13000738 is about 3605.6536161978. The cubic root of 13000738 is about 235.1379181366.

Adding to 13000738 its reverse (83700031), we get a palindrome (96700769).

The spelling of 13000738 in words is "thirteen million, seven hundred thirty-eight", and thus it is an aban number.