16039636 has 12 divisors (see below), whose sum is σ = 29720628. Its totient is φ = 7548032.

The previous prime is 16039631. The next prime is 16039649. The reversal of 16039636 is 63693061.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7075600 + 8964036 = 2660^2 + 2994^2 .

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16039631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117871 + ... + 118006.

It is an arithmetic number, because the mean of its divisors is an integer number (2476719).

Almost surely, 2^16039636 is an apocalyptic number.

It is an amenable number.

16039636 is a deficient number, since it is larger than the sum of its proper divisors (13680992).

16039636 is a wasteful number, since it uses less digits than its factorization.

16039636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235898 (or 235896 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 16039636 is about 4004.9514354109. The cubic root of 16039636 is about 252.1921143577.

The spelling of 16039636 in words is "sixteen million, thirty-nine thousand, six hundred thirty-six".