165828840 has 32 divisors (see below), whose sum is σ = 497486880. Its totient is φ = 44220992.

The previous prime is 165828811. The next prime is 165828841. The reversal of 165828840 is 48828561.

It is a junction number, because it is equal to n+sod(n) for n = 165828792 and 165828801.

It is not an unprimeable number, because it can be changed into a prime (165828841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690834 + ... + 691073.

It is an arithmetic number, because the mean of its divisors is an integer number (15546465).

Almost surely, 2^165828840 is an apocalyptic number.

165828840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165828840 is an abundant number, since it is smaller than the sum of its proper divisors (331658040).

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

165828840 is a wasteful number, since it uses less digits than its factorization.

165828840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1381921 (or 1381917 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 42.

The square root of 165828840 is about 12877.4547174510. The cubic root of 165828840 is about 549.3975110527.

The spelling of 165828840 in words is "one hundred sixty-five million, eight hundred twenty-eight thousand, eight hundred forty".