903945228 has 12 divisors (see below), whose sum is σ = 2109205560. Its totient is φ = 301315072.

The previous prime is 903945227. The next prime is 903945271. The reversal of 903945228 is 822549309.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 903945228.

It is not an unprimeable number, because it can be changed into a prime (903945223) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 37664373 + ... + 37664396.

It is an arithmetic number, because the mean of its divisors is an integer number (175767130).

Almost surely, 2^903945228 is an apocalyptic number.

It is an amenable number.

903945228 is an abundant number, since it is smaller than the sum of its proper divisors (1205260332).

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

903945228 is a wasteful number, since it uses less digits than its factorization.

903945228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75328776 (or 75328774 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 903945228 is about 30065.6818981376. The cubic root of 903945228 is about 966.8980969998.

The spelling of 903945228 in words is "nine hundred three million, nine hundred forty-five thousand, two hundred twenty-eight".