22032816 has 160 divisors (see below), whose sum is σ = 67995648. Its totient is φ = 6082560.

The previous prime is 22032809. The next prime is 22032817. The reversal of 22032816 is 61823022.

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 (22032817) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 328815 + ... + 328881.

Almost surely, 2^22032816 is an apocalyptic number.

22032816 is a gapful number since it is divisible by the number (26) 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 22032816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33997824).

22032816 is an abundant number, since it is smaller than the sum of its proper divisors (45962832).

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

22032816 is a wasteful number, since it uses less digits than its factorization.

22032816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 22032816 is about 4693.9126536398. The cubic root of 22032816 is about 280.3431846428.

Adding to 22032816 its reverse (61823022), we get a palindrome (83855838).

The spelling of 22032816 in words is "twenty-two million, thirty-two thousand, eight hundred sixteen".