422897280 has 128 divisors (see below), whose sum is σ = 1451761920. Its totient is φ = 104091648.

The previous prime is 422897261. The next prime is 422897311. The reversal of 422897280 is 82798224.

It is a tau number, because it is divible by the number of its divisors (128).

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, 16489 + ... + 33431.

It is an arithmetic number, because the mean of its divisors is an integer number (11341890).

Almost surely, 2^422897280 is an apocalyptic number.

422897280 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 422897280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (725880960).

422897280 is an abundant number, since it is smaller than the sum of its proper divisors (1028864640).

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

422897280 is a wasteful number, since it uses less digits than its factorization.

422897280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16978 (or 16966 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 422897280 is about 20564.4664409267. The cubic root of 422897280 is about 750.6053068955.

The spelling of 422897280 in words is "four hundred twenty-two million, eight hundred ninety-seven thousand, two hundred eighty".