422143488 has 320 divisors, whose sum is σ = 1409284800. Its totient is φ = 125411328.

The previous prime is 422143487. The next prime is 422143489. The reversal of 422143488 is 884341224.

It is an interprime number because it is at equal distance from previous prime (422143487) and next prime (422143489).

It is a super-2 number, since 2×422143488² = 356410248921612288, which contains 22 as substring.

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 congruent number.

It is not an unprimeable number, because it can be changed into a prime (422143487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14556658 + ... + 14556686.

It is an arithmetic number, because the mean of its divisors is an integer number (4404015).

Almost surely, 2^422143488 is an apocalyptic number.

422143488 is a gapful number since it is divisible by the number (48) 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 422143488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (704642400).

422143488 is an abundant number, since it is smaller than the sum of its proper divisors (987141312).

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

422143488 is an frugal number, since it uses more digits than its factorization.

422143488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 47 counting only the distinct ones).

The product of its digits is 49152, while the sum is 36.

The square root of 422143488 is about 20546.1307306266. The cubic root of 422143488 is about 750.1590702598.

The spelling of 422143488 in words is "four hundred twenty-two million, one hundred forty-three thousand, four hundred eighty-eight".