423280320 has 112 divisors (see below), whose sum is σ = 1349703168. Its totient is φ = 112389120.

The previous prime is 423280303. The next prime is 423280343. The reversal of 423280320 is 23082324.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259347 + ... + 260973.

Almost surely, 2^423280320 is an apocalyptic number.

423280320 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 423280320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (674851584).

423280320 is an abundant number, since it is smaller than the sum of its proper divisors (926422848).

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

423280320 is a wasteful number, since it uses less digits than its factorization.

423280320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1918 (or 1908 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 423280320 is about 20573.7774849443. Note that the first 3 decimals coincide. The cubic root of 423280320 is about 750.8318592281.

The spelling of 423280320 in words is "four hundred twenty-three million, two hundred eighty thousand, three hundred twenty".