223068978 has 80 divisors (see below), whose sum is σ = 549552960. Its totient is φ = 67068000.

The previous prime is 223068961. The next prime is 223068983. The reversal of 223068978 is 879860322.

223068978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 268668 + ... + 269496.

It is an arithmetic number, because the mean of its divisors is an integer number (6869412).

Almost surely, 2^223068978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223068978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274776480).

223068978 is an abundant number, since it is smaller than the sum of its proper divisors (326483982).

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

223068978 is a wasteful number, since it uses less digits than its factorization.

223068978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005 (or 996 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 223068978 is about 14935.4938987634. The cubic root of 223068978 is about 606.4752178709.

The spelling of 223068978 in words is "two hundred twenty-three million, sixty-eight thousand, nine hundred seventy-eight".