4020220044 has 54 divisors (see below), whose sum is σ = 10795192044. Its totient is φ = 1261242240.

The previous prime is 4020220003. The next prime is 4020220079. The reversal of 4020220044 is 4400220204.

4020220044 is a `hidden beast` number, since 402 + 0 + 220 + 0 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 4020219999 and 4020220026.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 182802 + ... + 203609.

Almost surely, 2^4020220044 is an apocalyptic number.

It is an amenable number.

4020220044 is an abundant number, since it is smaller than the sum of its proper divisors (6774972000).

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

4020220044 is a wasteful number, since it uses less digits than its factorization.

4020220044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386455 (or 386433 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 4020220044 is about 63405.2051806474. The cubic root of 4020220044 is about 1590.0713341676.

Adding to 4020220044 its reverse (4400220204), we get a palindrome (8420440248).

The spelling of 4020220044 in words is "four billion, twenty million, two hundred twenty thousand, forty-four".