423636 has 24 divisors (see below), whose sum is σ = 1012704. Its totient is φ = 137760.

The previous prime is 423617. The next prime is 423649. The reversal of 423636 is 636324.

It is a nude number because it is divisible by every one of its digits.

It is a d-powerful number, because it can be written as 4⁶ + 2¹⁷ + 6⁵ + 3³ + 3⁶ + 6⁷ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106 + ... + 926.

It is an arithmetic number, because the mean of its divisors is an integer number (42196).

2⁴²³⁶³⁶ is an apocalyptic number.

It is an amenable number.

423636 is an abundant number, since it is smaller than the sum of its proper divisors (589068).

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

423636 is a wasteful number, since it uses less digits than its factorization.

423636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871 (or 869 counting only the distinct ones).

The product of its digits is 2592, while the sum is 24.

The square root of 423636 is about 650.8732595521. The cubic root of 423636 is about 75.1042106903.

Adding to 423636 its sum of digits (24), we get a triangular number (423660 = T₉₂₀).

The spelling of 423636 in words is "four hundred twenty-three thousand, six hundred thirty-six".