18069936 has 40 divisors (see below), whose sum is σ = 47174064. Its totient is φ = 5959680.

The previous prime is 18069917. The next prime is 18069983. The reversal of 18069936 is 63996081.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2716 + ... + 6596.

Almost surely, 2^18069936 is an apocalyptic number.

18069936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18069936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23587032).

18069936 is an abundant number, since it is smaller than the sum of its proper divisors (29104128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18069936 is a wasteful number, since it uses less digits than its factorization.

18069936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3989 (or 3983 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 18069936 is about 4250.8747335107. The cubic root of 18069936 is about 262.4131159169.

The spelling of 18069936 in words is "eighteen million, sixty-nine thousand, nine hundred thirty-six".