228023775 has 48 divisors (see below), whose sum is σ = 478739200. Its totient is φ = 104237280.

The previous prime is 228023767. The next prime is 228023777. The reversal of 228023775 is 577320822.

It is a happy number.

228023775 is a `hidden beast` number, since 2 + 280 + 2 + 377 + 5 = 666.

It is not a de Polignac number, because 228023775 - 2³ = 228023767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228023777) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 19405 + ... + 28854.

Almost surely, 2^228023775 is an apocalyptic number.

228023775 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

228023775 is an abundant number, since it is smaller than the sum of its proper divisors (250715425).

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

228023775 is a wasteful number, since it uses less digits than its factorization.

228023775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48285 (or 48274 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 36.

The square root of 228023775 is about 15100.4561189389. The cubic root of 228023775 is about 610.9327082235.

The spelling of 228023775 in words is "two hundred twenty-eight million, twenty-three thousand, seven hundred seventy-five".