423973632 has 54 divisors (see below), whose sum is σ = 1129908892. Its totient is φ = 141134336.

The previous prime is 423973631. The next prime is 423973663. The reversal of 423973632 is 236379324.

It is not an unprimeable number, because it can be changed into a prime (423973631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 570253 + ... + 570995.

Almost surely, 2^423973632 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 423973632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (564954446).

423973632 is an abundant number, since it is smaller than the sum of its proper divisors (705935260).

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

423973632 is an frugal number, since it uses more digits than its factorization.

423973632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505 (or 748 counting only the distinct ones).

The product of its digits is 163296, while the sum is 39.

The square root of 423973632 is about 20590.6200003788. The cubic root of 423973632 is about 751.2415772914.

The spelling of 423973632 in words is "four hundred twenty-three million, nine hundred seventy-three thousand, six hundred thirty-two".