423223920 has 320 divisors, whose sum is σ = 1739888640. Its totient is φ = 92454912.

The previous prime is 423223909. The next prime is 423223937. The reversal of 423223920 is 29322324.

423223920 is a `hidden beast` number, since 423 + 2 + 239 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 347152 + ... + 348368.

It is an arithmetic number, because the mean of its divisors is an integer number (5437152).

Almost surely, 2^423223920 is an apocalyptic number.

423223920 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 423223920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (869944320).

423223920 is an abundant number, since it is smaller than the sum of its proper divisors (1316664720).

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

423223920 is a wasteful number, since it uses less digits than its factorization.

423223920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269 (or 1257 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 423223920 is about 20572.4067624573. The cubic root of 423223920 is about 750.7985095416.

The spelling of 423223920 in words is "four hundred twenty-three million, two hundred twenty-three thousand, nine hundred twenty".