223585740 has 144 divisors (see below), whose sum is σ = 788074560. Its totient is φ = 50250240.

The previous prime is 223585729. The next prime is 223585759. The reversal of 223585740 is 47585322.

223585740 is a `hidden beast` number, since 2 + 2 + 3 + 585 + 74 + 0 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 223585695 and 223585704.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 75406 + ... + 78314.

It is an arithmetic number, because the mean of its divisors is an integer number (5472740).

Almost surely, 2^223585740 is an apocalyptic number.

223585740 is a gapful number since it is divisible by the number (20) 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 223585740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394037280).

223585740 is an abundant number, since it is smaller than the sum of its proper divisors (564488820).

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

223585740 is a wasteful number, since it uses less digits than its factorization.

223585740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2992 (or 2987 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 36.

The square root of 223585740 is about 14952.7836873273. The cubic root of 223585740 is about 606.9431772290.

The spelling of 223585740 in words is "two hundred twenty-three million, five hundred eighty-five thousand, seven hundred forty".