228140788 has 12 divisors (see below), whose sum is σ = 399744352. Its totient is φ = 113928120.

The previous prime is 228140761. The next prime is 228140789. The reversal of 228140788 is 887041822.

It is a self number, because there is not a number n which added to its sum of digits gives 228140788.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228140789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31920 + ... + 38407.

Almost surely, 2^228140788 is an apocalyptic number.

It is an amenable number.

228140788 is a deficient number, since it is larger than the sum of its proper divisors (171603564).

228140788 is a wasteful number, since it uses less digits than its factorization.

228140788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71142 (or 71140 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 40.

The square root of 228140788 is about 15104.3301076215. The cubic root of 228140788 is about 611.0371927147.

The spelling of 228140788 in words is "two hundred twenty-eight million, one hundred forty thousand, seven hundred eighty-eight".