223964540 has 12 divisors (see below), whose sum is σ = 470325576. Its totient is φ = 89585808.

The previous prime is 223964537. The next prime is 223964563. The reversal of 223964540 is 45469322.

It is a self number, because there is not a number n which added to its sum of digits gives 223964540.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5599094 + ... + 5599133.

It is an arithmetic number, because the mean of its divisors is an integer number (39193798).

Almost surely, 2^223964540 is an apocalyptic number.

223964540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223964540 is an abundant number, since it is smaller than the sum of its proper divisors (246361036).

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

223964540 is a wasteful number, since it uses less digits than its factorization.

223964540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11198236 (or 11198234 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 223964540 is about 14965.4448647543. Note that the first 3 decimals coincide. The cubic root of 223964540 is about 607.2857458253.

The spelling of 223964540 in words is "two hundred twenty-three million, nine hundred sixty-four thousand, five hundred forty".