165576228 has 24 divisors (see below), whose sum is σ = 386574720. Its totient is φ = 55159200.

The previous prime is 165576211. The next prime is 165576233. The reversal of 165576228 is 822675561.

It is a self number, because there is not a number n which added to its sum of digits gives 165576228.

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, 25278 + ... + 31146.

It is an arithmetic number, because the mean of its divisors is an integer number (16107280).

Almost surely, 2^165576228 is an apocalyptic number.

It is an amenable number.

165576228 is an abundant number, since it is smaller than the sum of its proper divisors (220998492).

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

165576228 is a wasteful number, since it uses less digits than its factorization.

165576228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8227 (or 8225 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 165576228 is about 12867.6426745539. The cubic root of 165576228 is about 549.1183980926.

The spelling of 165576228 in words is "one hundred sixty-five million, five hundred seventy-six thousand, two hundred twenty-eight".