423056560 has 80 divisors (see below), whose sum is σ = 1046156256. Its totient is φ = 158552064.

The previous prime is 423056551. The next prime is 423056563. The reversal of 423056560 is 65650324.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (423056563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 376159 + ... + 377281.

Almost surely, 2^423056560 is an apocalyptic number.

423056560 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 423056560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (523078128).

423056560 is an abundant number, since it is smaller than the sum of its proper divisors (623099696).

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

423056560 is a wasteful number, since it uses less digits than its factorization.

423056560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430 (or 1424 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 423056560 is about 20568.3387758953. The cubic root of 423056560 is about 750.6995310426.

The spelling of 423056560 in words is "four hundred twenty-three million, fifty-six thousand, five hundred sixty".