223868550 has 24 divisors (see below), whose sum is σ = 555194376. Its totient is φ = 59698240.

The previous prime is 223868539. The next prime is 223868573. The reversal of 223868550 is 55868322.

It is a junction number, because it is equal to n+sod(n) for n = 223868499 and 223868508.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 746079 + ... + 746378.

It is an arithmetic number, because the mean of its divisors is an integer number (23133099).

Almost surely, 2^223868550 is an apocalyptic number.

223868550 is an abundant number, since it is smaller than the sum of its proper divisors (331325826).

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

223868550 is a wasteful number, since it uses less digits than its factorization.

223868550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492472 (or 1492467 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 223868550 is about 14962.2374663685. The cubic root of 223868550 is about 607.1989736235.

The spelling of 223868550 in words is "two hundred twenty-three million, eight hundred sixty-eight thousand, five hundred fifty".