223128486 has 64 divisors (see below), whose sum is σ = 568988160. Its totient is φ = 63491040.

The previous prime is 223128473. The next prime is 223128509. The reversal of 223128486 is 684821322.

It is a super-3 number, since 3×223128486³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223128486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103641 + ... + 105771.

It is an arithmetic number, because the mean of its divisors is an integer number (8890440).

Almost surely, 2^223128486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223128486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284494080).

223128486 is an abundant number, since it is smaller than the sum of its proper divisors (345859674).

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

223128486 is a wasteful number, since it uses less digits than its factorization.

223128486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426 (or 2420 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 223128486 is about 14937.4859330478. The cubic root of 223128486 is about 606.5291427731.

The spelling of 223128486 in words is "two hundred twenty-three million, one hundred twenty-eight thousand, four hundred eighty-six".