423020332 has 72 divisors (see below), whose sum is σ = 937969200. Its totient is φ = 165787776.

The previous prime is 423020281. The next prime is 423020357. The reversal of 423020332 is 233020324.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106038 + ... + 109954.

It is an arithmetic number, because the mean of its divisors is an integer number (13027350).

Almost surely, 2^423020332 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 423020332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468984600).

423020332 is an abundant number, since it is smaller than the sum of its proper divisors (514948868).

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

423020332 is a wasteful number, since it uses less digits than its factorization.

423020332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3983 (or 3974 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 423020332 is about 20567.4580830982. The cubic root of 423020332 is about 750.6781019781.

Adding to 423020332 its reverse (233020324), we get a palindrome (656040656).

The spelling of 423020332 in words is "four hundred twenty-three million, twenty thousand, three hundred thirty-two".