422153720 has 64 divisors (see below), whose sum is σ = 982497600. Its totient is φ = 163123200.

The previous prime is 422153713. The next prime is 422153729. The reversal of 422153720 is 27351224.

It is a self number, because there is not a number n which added to its sum of digits gives 422153720.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422153729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 222536 + ... + 224424.

It is an arithmetic number, because the mean of its divisors is an integer number (15351525).

Almost surely, 2^422153720 is an apocalyptic number.

422153720 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 422153720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491248800).

422153720 is an abundant number, since it is smaller than the sum of its proper divisors (560343880).

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

422153720 is a wasteful number, since it uses less digits than its factorization.

422153720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088 (or 2084 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 422153720 is about 20546.3797297723. The cubic root of 422153720 is about 750.1651310471.

The spelling of 422153720 in words is "four hundred twenty-two million, one hundred fifty-three thousand, seven hundred twenty".