223128235992 has 256 divisors, whose sum is σ = 622651392000. Its totient is φ = 66341721600.

The previous prime is 223128235963. The next prime is 223128236027. The reversal of 223128235992 is 299532821322.

223128235992 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×223128235992³ (a number of 35 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 201197134 + ... + 201198242.

It is an arithmetic number, because the mean of its divisors is an integer number (2432232000).

Almost surely, 2^223128235992 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 223128235992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311325696000).

223128235992 is an abundant number, since it is smaller than the sum of its proper divisors (399523156008).

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

223128235992 is a wasteful number, since it uses less digits than its factorization.

223128235992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542 (or 1538 counting only the distinct ones).

The product of its digits is 933120, while the sum is 48.

The spelling of 223128235992 in words is "two hundred twenty-three billion, one hundred twenty-eight million, two hundred thirty-five thousand, nine hundred ninety-two".