13289642 has 8 divisors (see below), whose sum is σ = 19952676. Its totient is φ = 6638752.

The previous prime is 13289641. The next prime is 13289663. The reversal of 13289642 is 24698231.

It can be written as a sum of positive squares in 2 ways, for example, as 13256881 + 32761 = 3641^2 + 181^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×13289642² = 353229168976328, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13289641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548 + ... + 5184.

Almost surely, 2^13289642 is an apocalyptic number.

13289642 is a deficient number, since it is larger than the sum of its proper divisors (6663034).

13289642 is a wasteful number, since it uses less digits than its factorization.

13289642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6072.

The product of its digits is 20736, while the sum is 35.

The square root of 13289642 is about 3645.4961253580. The cubic root of 13289642 is about 236.8669278536.

It can be divided in two parts, 13289 and 642, that added together give a palindrome (13931).

The spelling of 13289642 in words is "thirteen million, two hundred eighty-nine thousand, six hundred forty-two".