20784575224 has 128 divisors (see below), whose sum is σ = 48117888000. Its totient is φ = 8214091776.

The previous prime is 20784575197. The next prime is 20784575233. The reversal of 20784575224 is 42257548702.

It is a super-2 number, since 2×20784575224² (a number of 21 digits) contains 22 as substring.

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, 28589149 + ... + 28589875.

It is an arithmetic number, because the mean of its divisors is an integer number (375921000).

Almost surely, 2^20784575224 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 20784575224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24058944000).

20784575224 is an abundant number, since it is smaller than the sum of its proper divisors (27333312776).

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

20784575224 is a wasteful number, since it uses less digits than its factorization.

20784575224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 1254400, while the sum is 46.

The spelling of 20784575224 in words is "twenty billion, seven hundred eighty-four million, five hundred seventy-five thousand, two hundred twenty-four".