404240040220 has 24 divisors (see below), whose sum is σ = 849039760800. Its totient is φ = 161670172992.

The previous prime is 404240040187. The next prime is 404240040233. The reversal of 404240040220 is 22040042404.

It is a junction number, because it is equal to n+sod(n) for n = 404240040191 and 404240040200.

It is a congruent number.

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, 1486680 + ... + 1737439.

It is an arithmetic number, because the mean of its divisors is an integer number (35376656700).

Almost surely, 2^404240040220 is an apocalyptic number.

It is an amenable number.

404240040220 is an abundant number, since it is smaller than the sum of its proper divisors (444799720580).

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

404240040220 is a wasteful number, since it uses less digits than its factorization.

404240040220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3230397 (or 3230395 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 404240040220 its reverse (22040042404), we get a palindrome (426280082624).

The spelling of 404240040220 in words is "four hundred four billion, two hundred forty million, forty thousand, two hundred twenty".