404422420 has 24 divisors (see below), whose sum is σ = 851866848. Its totient is φ = 161277600.

The previous prime is 404422399. The next prime is 404422427. The reversal of 404422420 is 24224404.

It is a junction number, because it is equal to n+sod(n) for n = 404422391 and 404422400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404422427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23926 + ... + 37165.

It is an arithmetic number, because the mean of its divisors is an integer number (35494452).

Almost surely, 2^404422420 is an apocalyptic number.

It is an amenable number.

404422420 is an abundant number, since it is smaller than the sum of its proper divisors (447444428).

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

404422420 is a wasteful number, since it uses less digits than its factorization.

404422420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61431 (or 61429 counting only the distinct ones).

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

The square root of 404422420 is about 20110.2565871249. The cubic root of 404422420 is about 739.5117426826.

Adding to 404422420 its reverse (24224404), we get a palindrome (428646824).

The spelling of 404422420 in words is "four hundred four million, four hundred twenty-two thousand, four hundred twenty".