223236840 has 64 divisors (see below), whose sum is σ = 683976960. Its totient is φ = 58261760.

The previous prime is 223236829. The next prime is 223236863. The reversal of 223236840 is 48632322.

223236840 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×223236840³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 223236798 and 223236807.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14151 + ... + 25430.

It is an arithmetic number, because the mean of its divisors is an integer number (10687140).

Almost surely, 2^223236840 is an apocalyptic number.

223236840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223236840 is an abundant number, since it is smaller than the sum of its proper divisors (460740120).

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

223236840 is a wasteful number, since it uses less digits than its factorization.

223236840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39642 (or 39638 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 223236840 is about 14941.1124083851. The cubic root of 223236840 is about 606.6273062792.

The spelling of 223236840 in words is "two hundred twenty-three million, two hundred thirty-six thousand, eight hundred forty".