18223152 has 20 divisors (see below), whose sum is σ = 47076600. Its totient is φ = 6074368.

The previous prime is 18223141. The next prime is 18223157. The reversal of 18223152 is 25132281.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (18223157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189777 + ... + 189872.

It is an arithmetic number, because the mean of its divisors is an integer number (2353830).

Almost surely, 2^18223152 is an apocalyptic number.

18223152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18223152 is an abundant number, since it is smaller than the sum of its proper divisors (28853448).

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

18223152 is a wasteful number, since it uses less digits than its factorization.

18223152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379660 (or 379654 counting only the distinct ones).

The product of its digits is 960, while the sum is 24.

The square root of 18223152 is about 4268.8583954027. The cubic root of 18223152 is about 263.1527013487.

The spelling of 18223152 in words is "eighteen million, two hundred twenty-three thousand, one hundred fifty-two".