16223232 has 44 divisors (see below), whose sum is σ = 43249016. Its totient is φ = 5406720.

The previous prime is 16223213. The next prime is 16223239. The reversal of 16223232 is 23232261.

It is a hoax number, since the sum of its digits (21) coincides with the sum of the digits of its distinct prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 16223199 and 16223208.

It is not an unprimeable number, because it can be changed into a prime (16223239) 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, 432 + ... + 5712.

Almost surely, 2^16223232 is an apocalyptic number.

16223232 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 16223232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21624508).

16223232 is an abundant number, since it is smaller than the sum of its proper divisors (27025784).

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

16223232 is an equidigital number, since it uses as much as digits as its factorization.

16223232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5304 (or 5286 counting only the distinct ones).

The product of its digits is 864, while the sum is 21.

The square root of 16223232 is about 4027.8073439528. The cubic root of 16223232 is about 253.1506963092.

Adding to 16223232 its reverse (23232261), we get a palindrome (39455493).

The spelling of 16223232 in words is "sixteen million, two hundred twenty-three thousand, two hundred thirty-two".