423563580 has 336 divisors, whose sum is σ = 1542441600. Its totient is φ = 96577920.

The previous prime is 423563563. The next prime is 423563587. The reversal of 423563580 is 85365324.

It is a happy number.

423563580 is a `hidden beast` number, since 4 + 23 + 56 + 3 + 580 = 666.

It is a super-2 number, since 2×423563580² = 358812212604832800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (423563587) by changing a digit.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 3047151 + ... + 3047289.

It is an arithmetic number, because the mean of its divisors is an integer number (4590600).

Almost surely, 2^423563580 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 423563580, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (771220800).

423563580 is an abundant number, since it is smaller than the sum of its proper divisors (1118878020).

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

423563580 is a wasteful number, since it uses less digits than its factorization.

423563580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The square root of 423563580 is about 20580.6603392603. The cubic root of 423563580 is about 750.9993079202. Note that the first 3 decimals are identical.

The spelling of 423563580 in words is "four hundred twenty-three million, five hundred sixty-three thousand, five hundred eighty".