164169928 has 48 divisors (see below), whose sum is σ = 343504980. Its totient is φ = 73118976.

The previous prime is 164169913. The next prime is 164169931. The reversal of 164169928 is 829961461.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 64609444 + 99560484 = 8038^2 + 9978^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86526 + ... + 88402.

Almost surely, 2^164169928 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 164169928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (171752490).

164169928 is an abundant number, since it is smaller than the sum of its proper divisors (179335052).

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

164169928 is a wasteful number, since it uses less digits than its factorization.

164169928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954 (or 1921 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The square root of 164169928 is about 12812.8813309107. The cubic root of 164169928 is about 547.5593541568.

The spelling of 164169928 in words is "one hundred sixty-four million, one hundred sixty-nine thousand, nine hundred twenty-eight".