20044033220 has 24 divisors (see below), whose sum is σ = 42105689304. Its totient is φ = 8015095296.

The previous prime is 20044033193. The next prime is 20044033231. The reversal of 20044033220 is 2233044002.

It can be written as a sum of positive squares in 4 ways, for example, as 12774424576 + 7269608644 = 113024^2 + 85262^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20044033192 and 20044033201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91427 + ... + 220106.

It is an arithmetic number, because the mean of its divisors is an integer number (1754403721).

Almost surely, 2^20044033220 is an apocalyptic number.

20044033220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20044033220 is an abundant number, since it is smaller than the sum of its proper divisors (22061656084).

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

20044033220 is a wasteful number, since it uses less digits than its factorization.

20044033220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314759 (or 314757 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 20044033220 its reverse (2233044002), we get a palindrome (22277077222).

The spelling of 20044033220 in words is "twenty billion, forty-four million, thirty-three thousand, two hundred twenty".