228250388 has 6 divisors (see below), whose sum is σ = 399438186. Its totient is φ = 114125192.

The previous prime is 228250331. The next prime is 228250391. The reversal of 228250388 is 883052822.

228250388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 199713424 + 28536964 = 14132^2 + 5342^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28531295 + ... + 28531302.

It is an arithmetic number, because the mean of its divisors is an integer number (66573031).

Almost surely, 2^228250388 is an apocalyptic number.

It is an amenable number.

228250388 is a deficient number, since it is larger than the sum of its proper divisors (171187798).

228250388 is a wasteful number, since it uses less digits than its factorization.

228250388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57062601 (or 57062599 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 38.

The square root of 228250388 is about 15107.9577706585. The cubic root of 228250388 is about 611.1350255129.

The spelling of 228250388 in words is "two hundred twenty-eight million, two hundred fifty thousand, three hundred eighty-eight".