13570444 has 12 divisors (see below), whose sum is σ = 23795968. Its totient is φ = 6771600.

The previous prime is 13570441. The next prime is 13570477. The reversal of 13570444 is 44407531.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (13570441) 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, 972 + ... + 5299.

Almost surely, 2^13570444 is an apocalyptic number.

It is an amenable number.

13570444 is a deficient number, since it is larger than the sum of its proper divisors (10225524).

13570444 is a wasteful number, since it uses less digits than its factorization.

13570444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6816 (or 6814 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 13570444 is about 3683.8083554930. The cubic root of 13570444 is about 238.5235983196.

Adding to 13570444 its reverse (44407531), we get a palindrome (57977975).

The spelling of 13570444 in words is "thirteen million, five hundred seventy thousand, four hundred forty-four".