165595728 has 40 divisors (see below), whose sum is σ = 429177888. Its totient is φ = 55019392.

The previous prime is 165595721. The next prime is 165595733. The reversal of 165595728 is 827595561.

It is a happy number.

165595728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165595721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9775 + ... + 20657.

Almost surely, 2^165595728 is an apocalyptic number.

It is an amenable number.

165595728 is an abundant number, since it is smaller than the sum of its proper divisors (263582160).

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

165595728 is a wasteful number, since it uses less digits than its factorization.

165595728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11211 (or 11205 counting only the distinct ones).

The product of its digits is 756000, while the sum is 48.

The square root of 165595728 is about 12868.4003667900. The cubic root of 165595728 is about 549.1399539012.

The spelling of 165595728 in words is "one hundred sixty-five million, five hundred ninety-five thousand, seven hundred twenty-eight".