20224020 has 96 divisors (see below), whose sum is σ = 59875200. Its totient is φ = 5092864.

The previous prime is 20224013. The next prime is 20224031. The reversal of 20224020 is 2042202.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20223987 and 20224005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 102562 + ... + 102758.

It is an arithmetic number, because the mean of its divisors is an integer number (623700).

Almost surely, 2^20224020 is an apocalyptic number.

20224020 is a gapful number since it is divisible by the number (20) 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 20224020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29937600).

20224020 is an abundant number, since it is smaller than the sum of its proper divisors (39651180).

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

20224020 is a wasteful number, since it uses less digits than its factorization.

20224020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 295 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 20224020 is about 4497.1124068673. The cubic root of 20224020 is about 272.4514741188.

Adding to 20224020 its reverse (2042202), we get a palindrome (22266222).

The spelling of 20224020 in words is "twenty million, two hundred twenty-four thousand, twenty".