220402204040 has 32 divisors (see below), whose sum is σ = 500814918360. Its totient is φ = 87288000000.

The previous prime is 220402204039. The next prime is 220402204067. The reversal of 220402204040 is 40402204022.

It can be written as a sum of positive squares in 4 ways, for example, as 213235227076 + 7166976964 = 461774^2 + 84658^2 .

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

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, 27273461 + ... + 27281540.

Almost surely, 2^220402204040 is an apocalyptic number.

220402204040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220402204040 is an abundant number, since it is smaller than the sum of its proper divisors (280412714320).

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

220402204040 is a wasteful number, since it uses less digits than its factorization.

220402204040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54555113 (or 54555109 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 220402204040 its reverse (40402204022), we get a palindrome (260804408062).

The spelling of 220402204040 in words is "two hundred twenty billion, four hundred two million, two hundred four thousand, forty".