165736428 has 96 divisors (see below), whose sum is σ = 462309120. Its totient is φ = 45546240.

The previous prime is 165736427. The next prime is 165736433. The reversal of 165736428 is 824637561.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 165736428.

It is not an unprimeable number, because it can be changed into a prime (165736427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 100426 + ... + 102062.

It is an arithmetic number, because the mean of its divisors is an integer number (4815720).

Almost surely, 2^165736428 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 165736428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231154560).

165736428 is an abundant number, since it is smaller than the sum of its proper divisors (296572692).

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

165736428 is a wasteful number, since it uses less digits than its factorization.

165736428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1727 (or 1725 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 165736428 is about 12873.8660859899. The cubic root of 165736428 is about 549.2954372180.

The spelling of 165736428 in words is "one hundred sixty-five million, seven hundred thirty-six thousand, four hundred twenty-eight".