423318840 has 96 divisors (see below), whose sum is σ = 1477316880. Its totient is φ = 96757248.

The previous prime is 423318823. The next prime is 423318859. The reversal of 423318840 is 48813324.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30117 + ... + 41876.

Almost surely, 2^423318840 is an apocalyptic number.

423318840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423318840 is an abundant number, since it is smaller than the sum of its proper divisors (1053998040).

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

423318840 is a wasteful number, since it uses less digits than its factorization.

423318840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72021 (or 72010 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 423318840 is about 20574.7136067553. The cubic root of 423318840 is about 750.8546346518.

The spelling of 423318840 in words is "four hundred twenty-three million, three hundred eighteen thousand, eight hundred forty".