20023224 has 64 divisors (see below), whose sum is σ = 55792800. Its totient is φ = 5945856.

The previous prime is 20023187. The next prime is 20023259. The reversal of 20023224 is 42232002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7942 + ... + 10154.

Almost surely, 2^20023224 is an apocalyptic number.

20023224 is a gapful number since it is divisible by the number (24) 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 20023224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27896400).

20023224 is an abundant number, since it is smaller than the sum of its proper divisors (35769576).

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

20023224 is a wasteful number, since it uses less digits than its factorization.

20023224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2264 (or 2260 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20023224 is about 4474.7317238020. The cubic root of 20023224 is about 271.5467870760.

Adding to 20023224 its reverse (42232002), we get a palindrome (62255226).

The spelling of 20023224 in words is "twenty million, twenty-three thousand, two hundred twenty-four".