228728295 has 24 divisors (see below), whose sum is σ = 396850896. Its totient is φ = 121868928.

The previous prime is 228728287. The next prime is 228728333. The reversal of 228728295 is 592827822.

228728295 is a `hidden beast` number, since 2 + 287 + 282 + 95 = 666.

It is not a de Polignac number, because 228728295 - 2³ = 228728287 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 228728295.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62712 + ... + 66258.

It is an arithmetic number, because the mean of its divisors is an integer number (16535454).

Almost surely, 2^228728295 is an apocalyptic number.

228728295 is a deficient number, since it is larger than the sum of its proper divisors (168122601).

228728295 is a wasteful number, since it uses less digits than its factorization.

228728295 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4991 (or 4988 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 228728295 is about 15123.7659000660. The cubic root of 228728295 is about 611.5612564095.

The spelling of 228728295 in words is "two hundred twenty-eight million, seven hundred twenty-eight thousand, two hundred ninety-five".