422004402 has 48 divisors (see below), whose sum is σ = 964597920. Its totient is φ = 132969600.

The previous prime is 422004329. The next prime is 422004409. The reversal of 422004402 is 204400224.

422004402 is a `hidden beast` number, since 4 + 220 + 0 + 440 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (422004409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 194202 + ... + 196362.

It is an arithmetic number, because the mean of its divisors is an integer number (20095790).

Almost surely, 2^422004402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422004402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (482298960).

422004402 is an abundant number, since it is smaller than the sum of its proper divisors (542593518).

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

422004402 is a wasteful number, since it uses less digits than its factorization.

422004402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759 (or 2756 counting only the distinct ones).

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

The square root of 422004402 is about 20542.7457268983. The cubic root of 422004402 is about 750.0766748277.

Adding to 422004402 its reverse (204400224), we get a palindrome (626404626).

The spelling of 422004402 in words is "four hundred twenty-two million, four thousand, four hundred two".