422745732 has 108 divisors (see below), whose sum is σ = 1146534480. Its totient is φ = 131304192.

The previous prime is 422745641. The next prime is 422745779. The reversal of 422745732 is 237547224.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1862203 + ... + 1862429.

It is an arithmetic number, because the mean of its divisors is an integer number (10616060).

Almost surely, 2^422745732 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422745732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (573267240).

422745732 is an abundant number, since it is smaller than the sum of its proper divisors (723788748).

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

422745732 is a wasteful number, since it uses less digits than its factorization.

422745732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450 (or 428 counting only the distinct ones).

The product of its digits is 94080, while the sum is 36.

The square root of 422745732 is about 20560.7814053844. The cubic root of 422745732 is about 750.5156347465.

The spelling of 422745732 in words is "four hundred twenty-two million, seven hundred forty-five thousand, seven hundred thirty-two".