16147444 has 6 divisors (see below), whose sum is σ = 28258034. Its totient is φ = 8073720.

The previous prime is 16147441. The next prime is 16147451. The reversal of 16147444 is 44474161.

It can be written as a sum of positive squares in only one way, i.e., 12687844 + 3459600 = 3562^2 + 1860^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16147441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2018427 + ... + 2018434.

Almost surely, 2^16147444 is an apocalyptic number.

It is an amenable number.

16147444 is a deficient number, since it is larger than the sum of its proper divisors (12110590).

16147444 is a wasteful number, since it uses less digits than its factorization.

16147444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4036865 (or 4036863 counting only the distinct ones).

The product of its digits is 10752, while the sum is 31.

The square root of 16147444 is about 4018.3882341058. The cubic root of 16147444 is about 252.7558769399.

The spelling of 16147444 in words is "sixteen million, one hundred forty-seven thousand, four hundred forty-four".