189223776 has 120 divisors (see below), whose sum is σ = 636063120. Its totient is φ = 54058752.

The previous prime is 189223747. The next prime is 189223781. The reversal of 189223776 is 677322981.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12930 + ... + 23358.

It is an arithmetic number, because the mean of its divisors is an integer number (5300526).

Almost surely, 2^189223776 is an apocalyptic number.

189223776 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189223776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (318031560).

189223776 is an abundant number, since it is smaller than the sum of its proper divisors (446839344).

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

189223776 is a wasteful number, since it uses less digits than its factorization.

189223776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10458 (or 10441 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 189223776 is about 13755.8633316851. The cubic root of 189223776 is about 574.1057565540.

The spelling of 189223776 in words is "one hundred eighty-nine million, two hundred twenty-three thousand, seven hundred seventy-six".