18069912 has 256 divisors, whose sum is σ = 65664000. Its totient is φ = 4478976.

The previous prime is 18069899. The next prime is 18069917. The reversal of 18069912 is 21996081.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18069917) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 488358 + ... + 488394.

It is an arithmetic number, because the mean of its divisors is an integer number (256500).

Almost surely, 2^18069912 is an apocalyptic number.

18069912 is a gapful number since it is divisible by the number (12) 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 18069912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32832000).

18069912 is an abundant number, since it is smaller than the sum of its proper divisors (47594088).

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

18069912 is a wasteful number, since it uses less digits than its factorization.

18069912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 36.

The square root of 18069912 is about 4250.8719105614. The cubic root of 18069912 is about 262.4129997402.

It can be divided in two parts, 18069 and 912, that added together give a palindrome (18981).

The spelling of 18069912 in words is "eighteen million, sixty-nine thousand, nine hundred twelve".