404041220 has 48 divisors (see below), whose sum is σ = 927134208. Its totient is φ = 146684160.

The previous prime is 404041177. The next prime is 404041237. The reversal of 404041220 is 22140404.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187469 + ... + 189611.

It is an arithmetic number, because the mean of its divisors is an integer number (19315296).

Almost surely, 2^404041220 is an apocalyptic number.

It is an amenable number.

404041220 is an abundant number, since it is smaller than the sum of its proper divisors (523092988).

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

404041220 is a wasteful number, since it uses less digits than its factorization.

404041220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3020 (or 3018 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 404041220 is about 20100.7766019127. The cubic root of 404041220 is about 739.2793202778.

Adding to 404041220 its reverse (22140404), we get a palindrome (426181624).

The spelling of 404041220 in words is "four hundred four million, forty-one thousand, two hundred twenty".