224020020 has 96 divisors (see below), whose sum is σ = 724098816. Its totient is φ = 50688000.

The previous prime is 224020007. The next prime is 224020037. The reversal of 224020020 is 20020422.

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 = 224019978 and 224020005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39780 + ... + 45060.

It is an arithmetic number, because the mean of its divisors is an integer number (7542696).

Almost surely, 2^224020020 is an apocalyptic number.

224020020 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 224020020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362049408).

224020020 is an abundant number, since it is smaller than the sum of its proper divisors (500078796).

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

224020020 is a wasteful number, since it uses less digits than its factorization.

224020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5401 (or 5399 counting only the distinct ones).

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

The square root of 224020020 is about 14967.2983534103. The cubic root of 224020020 is about 607.3358868454.

Adding to 224020020 its reverse (20020422), we get a palindrome (244040442).

The spelling of 224020020 in words is "two hundred twenty-four million, twenty thousand, twenty".