423523320 has 64 divisors (see below), whose sum is σ = 1386080640. Its totient is φ = 102672000.

The previous prime is 423523313. The next prime is 423523421. The reversal of 423523320 is 23325324.

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

It is a congruent number.

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, 159106 + ... + 161745.

It is an arithmetic number, because the mean of its divisors is an integer number (21657510).

Almost surely, 2^423523320 is an apocalyptic number.

423523320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423523320 is an abundant number, since it is smaller than the sum of its proper divisors (962557320).

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

423523320 is a wasteful number, since it uses less digits than its factorization.

423523320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320876 (or 320872 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 24.

The square root of 423523320 is about 20579.6822132899. The cubic root of 423523320 is about 750.9755128384.

Adding to 423523320 its reverse (23325324), we get a palindrome (446848644).

The spelling of 423523320 in words is "four hundred twenty-three million, five hundred twenty-three thousand, three hundred twenty".