165166240 has 48 divisors (see below), whose sum is σ = 410749920. Its totient is φ = 62588160.

The previous prime is 165166213. The next prime is 165166247. The reversal of 165166240 is 42661561.

It is not an unprimeable number, because it can be changed into a prime (165166247) 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, 24126 + ... + 30205.

It is an arithmetic number, because the mean of its divisors is an integer number (8557290).

Almost surely, 2^165166240 is an apocalyptic number.

165166240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165166240 is an abundant number, since it is smaller than the sum of its proper divisors (245583680).

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

165166240 is a wasteful number, since it uses less digits than its factorization.

165166240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54365 (or 54357 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 165166240 is about 12851.7018328313. The cubic root of 165166240 is about 548.6647942730.

The spelling of 165166240 in words is "one hundred sixty-five million, one hundred sixty-six thousand, two hundred forty".