164266228 has 18 divisors (see below), whose sum is σ = 334399506. Its totient is φ = 70399728.

The previous prime is 164266217. The next prime is 164266231. The reversal of 164266228 is 822662461.

It can be written as a sum of positive squares in only one way, i.e., 132434064 + 31832164 = 11508^2 + 5642^2 .

It is a super-2 number, since 2×164266228² = 53966787322695968, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 418851 + ... + 419242.

Almost surely, 2^164266228 is an apocalyptic number.

It is an amenable number.

164266228 is an abundant number, since it is smaller than the sum of its proper divisors (170133278).

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

164266228 is a wasteful number, since it uses less digits than its factorization.

164266228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838111 (or 838102 counting only the distinct ones).

The product of its digits is 55296, while the sum is 37.

The square root of 164266228 is about 12816.6387169179. The cubic root of 164266228 is about 547.6663970230. Note that the first 3 decimals are identical.

The spelling of 164266228 in words is "one hundred sixty-four million, two hundred sixty-six thousand, two hundred twenty-eight".