423823240 has 32 divisors (see below), whose sum is σ = 967841280. Its totient is φ = 166997952.

The previous prime is 423823217. The next prime is 423823249. The reversal of 423823240 is 42328324.

It is a super-2 number, since 2×423823240² = 359252277528195200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 423823199 and 423823208.

It is not an unprimeable number, because it can be changed into a prime (423823249) by changing a digit.

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, 76392 + ... + 81751.

It is an arithmetic number, because the mean of its divisors is an integer number (30245040).

Almost surely, 2^423823240 is an apocalyptic number.

423823240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

423823240 is an abundant number, since it is smaller than the sum of its proper divisors (544018040).

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

423823240 is a wasteful number, since it uses less digits than its factorization.

423823240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158221 (or 158217 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 423823240 is about 20586.9677223238. The cubic root of 423823240 is about 751.1527399391.

The spelling of 423823240 in words is "four hundred twenty-three million, eight hundred twenty-three thousand, two hundred forty".