660228272 has 30 divisors (see below), whose sum is σ = 1406058444. Its totient is φ = 300102880.

The previous prime is 660228241. The next prime is 660228293. The reversal of 660228272 is 272822066.

It is a super-2 number, since 2×660228272² = 871802742296211968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 168578 + ... + 172449.

Almost surely, 2^660228272 is an apocalyptic number.

It is an amenable number.

660228272 is an abundant number, since it is smaller than the sum of its proper divisors (745830172).

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

660228272 is a wasteful number, since it uses less digits than its factorization.

660228272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341057 (or 341040 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 660228272 is about 25694.9075110225. The cubic root of 660228272 is about 870.7591348293.

The spelling of 660228272 in words is "six hundred sixty million, two hundred twenty-eight thousand, two hundred seventy-two".