20223232 has 36 divisors (see below), whose sum is σ = 40673556. Its totient is φ = 10035200.

The previous prime is 20223221. The next prime is 20223257. The reversal of 20223232 is 23232202.

It can be written as a sum of positive squares in 2 ways, for example, as 19927296 + 295936 = 4464^2 + 544^2 .

It is a super-2 number, since 2×20223232² = 817958225051648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50232 + ... + 50632.

It is an arithmetic number, because the mean of its divisors is an integer number (1129821).

Almost surely, 2^20223232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20223232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20336778).

20223232 is an abundant number, since it is smaller than the sum of its proper divisors (20450324).

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

20223232 is an equidigital number, since it uses as much as digits as its factorization.

20223232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614 (or 600 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 20223232 is about 4497.0247942390. The cubic root of 20223232 is about 272.4479355122.

Adding to 20223232 its reverse (23232202), we get a palindrome (43455434).

The spelling of 20223232 in words is "twenty million, two hundred twenty-three thousand, two hundred thirty-two".