223672820 has 24 divisors (see below), whose sum is σ = 536815104. Its totient is φ = 76687776.

The previous prime is 223672817. The next prime is 223672837. The reversal of 223672820 is 28276322.

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 7 ways as a sum of consecutive naturals, for example, 798692 + ... + 798971.

It is an arithmetic number, because the mean of its divisors is an integer number (22367296).

Almost surely, 2^223672820 is an apocalyptic number.

223672820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223672820 is an abundant number, since it is smaller than the sum of its proper divisors (313142284).

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

223672820 is a wasteful number, since it uses less digits than its factorization.

223672820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597679 (or 1597677 counting only the distinct ones).

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

The square root of 223672820 is about 14955.6952362637. The cubic root of 223672820 is about 607.0219624440.

The spelling of 223672820 in words is "two hundred twenty-three million, six hundred seventy-two thousand, eight hundred twenty".