223949720 has 32 divisors (see below), whose sum is σ = 509090400. Its totient is φ = 88654848.

The previous prime is 223949701. The next prime is 223949723. The reversal of 223949720 is 27949322.

223949720 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 not an unprimeable number, because it can be changed into a prime (223949723) 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, 24980 + ... + 32739.

It is an arithmetic number, because the mean of its divisors is an integer number (15909075).

Almost surely, 2^223949720 is an apocalyptic number.

223949720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223949720 is an abundant number, since it is smaller than the sum of its proper divisors (285140680).

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

223949720 is a wasteful number, since it uses less digits than its factorization.

223949720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57827 (or 57823 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 223949720 is about 14964.9497159195. The cubic root of 223949720 is about 607.2723505898.

The spelling of 223949720 in words is "two hundred twenty-three million, nine hundred forty-nine thousand, seven hundred twenty".