18224832 has 56 divisors (see below), whose sum is σ = 50328576. Its totient is φ = 5809408.

The previous prime is 18224827. The next prime is 18224837. The reversal of 18224832 is 23842281.

It is an interprime number because it is at equal distance from previous prime (18224827) and next prime (18224837).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 18224832.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18224837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2353 + ... + 6479.

Almost surely, 2^18224832 is an apocalyptic number.

18224832 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 18224832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25164288).

18224832 is an abundant number, since it is smaller than the sum of its proper divisors (32103744).

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

18224832 is a wasteful number, since it uses less digits than its factorization.

18224832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4165 (or 4155 counting only the distinct ones).

The product of its digits is 6144, while the sum is 30.

The square root of 18224832 is about 4269.0551647876. The cubic root of 18224832 is about 263.1607878194.

The spelling of 18224832 in words is "eighteen million, two hundred twenty-four thousand, eight hundred thirty-two".