423302320 has 80 divisors (see below), whose sum is σ = 1150997760. Its totient is φ = 141748992.

The previous prime is 423302317. The next prime is 423302333. The reversal of 423302320 is 23203324.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15291 + ... + 32869.

It is an arithmetic number, because the mean of its divisors is an integer number (14387472).

Almost surely, 2^423302320 is an apocalyptic number.

423302320 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 423302320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (575498880).

423302320 is an abundant number, since it is smaller than the sum of its proper divisors (727695440).

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

423302320 is a wasteful number, since it uses less digits than its factorization.

423302320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17642 (or 17636 counting only the distinct ones).

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

The square root of 423302320 is about 20574.3121391700. The cubic root of 423302320 is about 750.8448671678.

Adding to 423302320 its reverse (23203324), we get a palindrome (446505644).

The spelling of 423302320 in words is "four hundred twenty-three million, three hundred two thousand, three hundred twenty".