223661872 has 30 divisors (see below), whose sum is σ = 504096828. Its totient is φ = 95854752.

The previous prime is 223661819. The next prime is 223661887. The reversal of 223661872 is 278166322.

223661872 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141858 + ... + 143425.

Almost surely, 2^223661872 is an apocalyptic number.

It is an amenable number.

223661872 is an abundant number, since it is smaller than the sum of its proper divisors (280434956).

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

223661872 is a wasteful number, since it uses less digits than its factorization.

223661872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285305 (or 285292 counting only the distinct ones).

The product of its digits is 48384, while the sum is 37.

The square root of 223661872 is about 14955.3292173726. The cubic root of 223661872 is about 607.0120584171.

The spelling of 223661872 in words is "two hundred twenty-three million, six hundred sixty-one thousand, eight hundred seventy-two".