422666244 has 288 divisors, whose sum is σ = 1477921536. Its totient is φ = 98288640.

The previous prime is 422666243. The next prime is 422666269. The reversal of 422666244 is 442666224.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 422666199 and 422666208.

It is not an unprimeable number, because it can be changed into a prime (422666243) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1333174 + ... + 1333490.

It is an arithmetic number, because the mean of its divisors is an integer number (5131672).

Almost surely, 2^422666244 is an apocalyptic number.

422666244 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422666244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (738960768).

422666244 is an abundant number, since it is smaller than the sum of its proper divisors (1055255292).

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

422666244 is a wasteful number, since it uses less digits than its factorization.

422666244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395 (or 390 counting only the distinct ones).

The product of its digits is 110592, while the sum is 36.

The square root of 422666244 is about 20558.8483140472. The cubic root of 422666244 is about 750.4685925005.

It can be divided in two parts, 422 and 666244, that added together give a palindrome (666666).

The spelling of 422666244 in words is "four hundred twenty-two million, six hundred sixty-six thousand, two hundred forty-four".