165324728 has 16 divisors (see below), whose sum is σ = 328218480. Its totient is φ = 77799808.

The previous prime is 165324721. The next prime is 165324739. The reversal of 165324728 is 827423561.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 165324691 and 165324700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165324721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 607676 + ... + 607947.

It is an arithmetic number, because the mean of its divisors is an integer number (20513655).

Almost surely, 2^165324728 is an apocalyptic number.

It is an amenable number.

165324728 is a deficient number, since it is larger than the sum of its proper divisors (162893752).

165324728 is a wasteful number, since it uses less digits than its factorization.

165324728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1215646 (or 1215642 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 165324728 is about 12857.8663859911. The cubic root of 165324728 is about 548.8402316326.

The spelling of 165324728 in words is "one hundred sixty-five million, three hundred twenty-four thousand, seven hundred twenty-eight".