40204422 has 96 divisors (see below), whose sum is σ = 97954272. Its totient is φ = 11860992.

The previous prime is 40204421. The next prime is 40204433. The reversal of 40204422 is 22440204.

40204422 is a `hidden beast` number, since 40 + 204 + 422 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

40204422 is a modest number, since divided by 4422 gives 4020 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 40204395 and 40204404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40204421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 600033 + ... + 600099.

It is an arithmetic number, because the mean of its divisors is an integer number (1020357).

Almost surely, 2^40204422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40204422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48977136).

40204422 is an abundant number, since it is smaller than the sum of its proper divisors (57749850).

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

40204422 is a wasteful number, since it uses less digits than its factorization.

40204422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

The square root of 40204422 is about 6340.6957031543. The cubic root of 40204422 is about 342.5767941891.

Adding to 40204422 its reverse (22440204), we get a palindrome (62644626).

The spelling of 40204422 in words is "forty million, two hundred four thousand, four hundred twenty-two".