18269712 has 120 divisors (see below), whose sum is σ = 54885376. Its totient is φ = 5878656.

The previous prime is 18269707. The next prime is 18269729. The reversal of 18269712 is 21796281.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 143793 + ... + 143919.

Almost surely, 2^18269712 is an apocalyptic number.

18269712 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 18269712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27442688).

18269712 is an abundant number, since it is smaller than the sum of its proper divisors (36615664).

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

18269712 is a wasteful number, since it uses less digits than its factorization.

18269712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 169 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 18269712 is about 4274.3083651042. The cubic root of 18269712 is about 263.3766283921.

It can be divided in two parts, 18269 and 712, that added together give a palindrome (18981).

The spelling of 18269712 in words is "eighteen million, two hundred sixty-nine thousand, seven hundred twelve".