422641560 has 128 divisors (see below), whose sum is σ = 1443432960. Its totient is φ = 97996800.

The previous prime is 422641519. The next prime is 422641613. The reversal of 422641560 is 65146224.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 23400 + ... + 37320.

It is an arithmetic number, because the mean of its divisors is an integer number (11276820).

Almost surely, 2^422641560 is an apocalyptic number.

422641560 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 422641560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (721716480).

422641560 is an abundant number, since it is smaller than the sum of its proper divisors (1020791400).

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

422641560 is a wasteful number, since it uses less digits than its factorization.

422641560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13969 (or 13965 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 422641560 is about 20558.2479798255. The cubic root of 422641560 is about 750.4539829217.

Adding to 422641560 its reverse (65146224), we get a palindrome (487787784).

The spelling of 422641560 in words is "four hundred twenty-two million, six hundred forty-one thousand, five hundred sixty".