422260640 has 96 divisors (see below), whose sum is σ = 1040195520. Its totient is φ = 161843200.

The previous prime is 422260639. The next prime is 422260721. The reversal of 422260640 is 46062224.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386495 + ... + 387585.

It is an arithmetic number, because the mean of its divisors is an integer number (10835370).

Almost surely, 2^422260640 is an apocalyptic number.

422260640 is a gapful number since it is divisible by the number (40) 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 422260640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520097760).

422260640 is an abundant number, since it is smaller than the sum of its proper divisors (617934880).

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

422260640 is a wasteful number, since it uses less digits than its factorization.

422260640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206 (or 1198 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 422260640 is about 20548.9814832755. The cubic root of 422260640 is about 750.2284578097.

The spelling of 422260640 in words is "four hundred twenty-two million, two hundred sixty thousand, six hundred forty".