165011028 has 72 divisors (see below), whose sum is σ = 482362272. Its totient is φ = 43517376.

The previous prime is 165010981. The next prime is 165011051. The reversal of 165011028 is 820110561.

It is a junction number, because it is equal to n+sod(n) for n = 165010989 and 165011007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3150 + ... + 18437.

It is an arithmetic number, because the mean of its divisors is an integer number (6699476).

Almost surely, 2^165011028 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 165011028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241181136).

165011028 is an abundant number, since it is smaller than the sum of its proper divisors (317351244).

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

165011028 is a wasteful number, since it uses less digits than its factorization.

165011028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21621 (or 21612 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 24.

The square root of 165011028 is about 12845.6618358106. The cubic root of 165011028 is about 548.4928744552.

Adding to 165011028 its reverse (820110561), we get a palindrome (985121589).

The spelling of 165011028 in words is "one hundred sixty-five million, eleven thousand, twenty-eight".