223870640 has 40 divisors (see below), whose sum is σ = 594857760. Its totient is φ = 76755456.

The previous prime is 223870639. The next prime is 223870657. The reversal of 223870640 is 46078322.

223870640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 223870597 and 223870606.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 199325 + ... + 200444.

It is an arithmetic number, because the mean of its divisors is an integer number (14871444).

Almost surely, 2^223870640 is an apocalyptic number.

223870640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223870640 is an abundant number, since it is smaller than the sum of its proper divisors (370987120).

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

223870640 is a wasteful number, since it uses less digits than its factorization.

223870640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399789 (or 399783 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 223870640 is about 14962.3073087008. The cubic root of 223870640 is about 607.2008631876.

The spelling of 223870640 in words is "two hundred twenty-three million, eight hundred seventy thousand, six hundred forty".