423518020 has 24 divisors (see below), whose sum is σ = 889991424. Its totient is φ = 169292256.

The previous prime is 423518009. The next prime is 423518057. The reversal of 423518020 is 20815324.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26989 + ... + 39691.

It is an arithmetic number, because the mean of its divisors is an integer number (37082976).

Almost surely, 2^423518020 is an apocalyptic number.

It is an amenable number.

423518020 is an abundant number, since it is smaller than the sum of its proper divisors (466473404).

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

423518020 is a wasteful number, since it uses less digits than its factorization.

423518020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14379 (or 14377 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 423518020 is about 20579.5534451066. The cubic root of 423518020 is about 750.9723802389.

The spelling of 423518020 in words is "four hundred twenty-three million, five hundred eighteen thousand, twenty".