13280738 has 4 divisors (see below), whose sum is σ = 19921110. Its totient is φ = 6640368.

The previous prime is 13280699. The next prime is 13280749. The reversal of 13280738 is 83708231.

13280738 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83708231 = 3617 ⋅23143.

It can be written as a sum of positive squares in only one way, i.e., 12794929 + 485809 = 3577^2 + 697^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3320183 + ... + 3320186.

Almost surely, 2^13280738 is an apocalyptic number.

13280738 is a deficient number, since it is larger than the sum of its proper divisors (6640372).

13280738 is an equidigital number, since it uses as much as digits as its factorization.

13280738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6640371.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 13280738 is about 3644.2746877808. The cubic root of 13280738 is about 236.8140161117.

Adding to 13280738 its reverse (83708231), we get a palindrome (96988969).

The spelling of 13280738 in words is "thirteen million, two hundred eighty thousand, seven hundred thirty-eight".