20004145224 has 32 divisors (see below), whose sum is σ = 57154701120. Its totient is φ = 5715470016.

The previous prime is 20004145223. The next prime is 20004145243. The reversal of 20004145224 is 42254140002.

It is a happy number.

It is a super-2 number, since 2×20004145224² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 20004145194 and 20004145203.

It is not an unprimeable number, because it can be changed into a prime (20004145223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59535979 + ... + 59536314.

It is an arithmetic number, because the mean of its divisors is an integer number (1786084410).

Almost surely, 2^20004145224 is an apocalyptic number.

20004145224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20004145224 is an abundant number, since it is smaller than the sum of its proper divisors (37150555896).

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

20004145224 is a wasteful number, since it uses less digits than its factorization.

20004145224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119072309 (or 119072305 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 20004145224 its reverse (42254140002), we get a palindrome (62258285226).

The spelling of 20004145224 in words is "twenty billion, four million, one hundred forty-five thousand, two hundred twenty-four".