223897878 has 32 divisors (see below), whose sum is σ = 511002720. Its totient is φ = 72614880.

The previous prime is 223897873. The next prime is 223897901. The reversal of 223897878 is 878798322.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (223897873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54033 + ... + 58028.

It is an arithmetic number, because the mean of its divisors is an integer number (15968835).

Almost surely, 2^223897878 is an apocalyptic number.

223897878 is an abundant number, since it is smaller than the sum of its proper divisors (287104842).

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

223897878 is a wasteful number, since it uses less digits than its factorization.

223897878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112109 (or 112103 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 223897878 is about 14963.2175015937. The cubic root of 223897878 is about 607.2254879238.

The spelling of 223897878 in words is "two hundred twenty-three million, eight hundred ninety-seven thousand, eight hundred seventy-eight".