223297928 has 32 divisors (see below), whose sum is σ = 480668160. Its totient is φ = 95264640.

The previous prime is 223297927. The next prime is 223297933. The reversal of 223297928 is 829792322.

It is not an unprimeable number, because it can be changed into a prime (223297927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3548 + ... + 21428.

It is an arithmetic number, because the mean of its divisors is an integer number (15020880).

Almost surely, 2^223297928 is an apocalyptic number.

223297928 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

223297928 is an abundant number, since it is smaller than the sum of its proper divisors (257370232).

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

223297928 is a wasteful number, since it uses less digits than its factorization.

223297928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18117 (or 18113 counting only the distinct ones).

The product of its digits is 217728, while the sum is 44.

The square root of 223297928 is about 14943.1565607806. The cubic root of 223297928 is about 606.6826350639.

The spelling of 223297928 in words is "two hundred twenty-three million, two hundred ninety-seven thousand, nine hundred twenty-eight".