201223728 has 60 divisors (see below), whose sum is σ = 581325888. Its totient is φ = 64909440.

The previous prime is 201223681. The next prime is 201223741. The reversal of 201223728 is 827322102.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18075 + ... + 27002.

Almost surely, 2^201223728 is an apocalyptic number.

It is an amenable number.

201223728 is an abundant number, since it is smaller than the sum of its proper divisors (380102160).

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

201223728 is a wasteful number, since it uses less digits than its factorization.

201223728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45122 (or 45113 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 201223728 is about 14185.3349625590. The cubic root of 201223728 is about 585.9938573675.

The spelling of 201223728 in words is "two hundred one million, two hundred twenty-three thousand, seven hundred twenty-eight".