40004000220 has 48 divisors (see below), whose sum is σ = 115624470528. Its totient is φ = 10323612480.

The previous prime is 40004000203. The next prime is 40004000249. The reversal of 40004000220 is 2200040004.

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 = 40004000196 and 40004000205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10751904 + ... + 10755623.

It is an arithmetic number, because the mean of its divisors is an integer number (2408843136).

Almost surely, 2^40004000220 is an apocalyptic number.

It is an amenable number.

40004000220 is an abundant number, since it is smaller than the sum of its proper divisors (75620470308).

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

40004000220 is a wasteful number, since it uses less digits than its factorization.

40004000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21507570 (or 21507568 counting only the distinct ones).

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

Adding to 40004000220 its reverse (2200040004), we get a palindrome (42204040224).

The spelling of 40004000220 in words is "forty billion, four million, two hundred twenty", and thus it is an aban number.