18216852 has 12 divisors (see below), whose sum is σ = 42506016. Its totient is φ = 6072280.

The previous prime is 18216823. The next prime is 18216853. The reversal of 18216852 is 25861281.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18216853) 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, 759024 + ... + 759047.

It is an arithmetic number, because the mean of its divisors is an integer number (3542168).

Almost surely, 2^18216852 is an apocalyptic number.

18216852 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18216852 is an abundant number, since it is smaller than the sum of its proper divisors (24289164).

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

18216852 is a wasteful number, since it uses less digits than its factorization.

18216852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518078 (or 1518076 counting only the distinct ones).

The product of its digits is 7680, while the sum is 33.

The square root of 18216852 is about 4268.1204294162. The cubic root of 18216852 is about 263.1223726565.

The spelling of 18216852 in words is "eighteen million, two hundred sixteen thousand, eight hundred fifty-two".