13445188 has 6 divisors (see below), whose sum is σ = 23529086. Its totient is φ = 6722592.

The previous prime is 13445167. The next prime is 13445189. The reversal of 13445188 is 88154431.

It can be written as a sum of positive squares in only one way, i.e., 9437184 + 4008004 = 3072^2 + 2002^2 .

It is not an unprimeable number, because it can be changed into a prime (13445189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1680645 + ... + 1680652.

Almost surely, 2^13445188 is an apocalyptic number.

It is an amenable number.

13445188 is a deficient number, since it is larger than the sum of its proper divisors (10083898).

13445188 is a wasteful number, since it uses less digits than its factorization.

13445188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3361301 (or 3361299 counting only the distinct ones).

The product of its digits is 15360, while the sum is 34.

The square root of 13445188 is about 3666.7680592042. The cubic root of 13445188 is about 237.7874665035.

The spelling of 13445188 in words is "thirteen million, four hundred forty-five thousand, one hundred eighty-eight".