165072230 has 16 divisors (see below), whose sum is σ = 299270160. Its totient is φ = 65553312.

The previous prime is 165072211. The next prime is 165072239. The reversal of 165072230 is 32270561.

It is a super-2 number, since 2×165072230² = 54497682234345800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 165072230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165072239) 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, 57989 + ... + 60768.

It is an arithmetic number, because the mean of its divisors is an integer number (18704385).

Almost surely, 2^165072230 is an apocalyptic number.

165072230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

165072230 is a deficient number, since it is larger than the sum of its proper divisors (134197930).

165072230 is a wasteful number, since it uses less digits than its factorization.

165072230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118903.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 165072230 is about 12848.0438199751. The cubic root of 165072230 is about 548.5606774216.

The spelling of 165072230 in words is "one hundred sixty-five million, seventy-two thousand, two hundred thirty".