165340872 has 32 divisors (see below), whose sum is σ = 459280800. Its totient is φ = 55113552.

The previous prime is 165340837. The next prime is 165340933. The reversal of 165340872 is 278043561.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382518 + ... + 382949.

It is an arithmetic number, because the mean of its divisors is an integer number (14352525).

Almost surely, 2^165340872 is an apocalyptic number.

165340872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165340872 is an abundant number, since it is smaller than the sum of its proper divisors (293939928).

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

165340872 is a wasteful number, since it uses less digits than its factorization.

165340872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765482 (or 765472 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 165340872 is about 12858.4941575598. The cubic root of 165340872 is about 548.8580958453.

The spelling of 165340872 in words is "one hundred sixty-five million, three hundred forty thousand, eight hundred seventy-two".