222371928 has 96 divisors (see below), whose sum is σ = 631388160. Its totient is φ = 70614720.

The previous prime is 222371927. The next prime is 222371939. The reversal of 222371928 is 829173222.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 222371892 and 222371901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222371923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 148801 + ... + 150287.

It is an arithmetic number, because the mean of its divisors is an integer number (6576960).

Almost surely, 2^222371928 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 222371928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (315694080).

222371928 is an abundant number, since it is smaller than the sum of its proper divisors (409016232).

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

222371928 is a wasteful number, since it uses less digits than its factorization.

222371928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597 (or 1590 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 222371928 is about 14912.1402890397. The cubic root of 222371928 is about 605.8428504709.

The spelling of 222371928 in words is "two hundred twenty-two million, three hundred seventy-one thousand, nine hundred twenty-eight".