228539471 has 4 divisors (see below), whose sum is σ = 235911744. Its totient is φ = 221167200.

The previous prime is 228539447. The next prime is 228539497. The reversal of 228539471 is 174935822.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228539471 - 2¹⁸ = 228277327 is a prime.

It is a super-3 number, since 3×228539471³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228539411) 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, 3686090 + ... + 3686151.

It is an arithmetic number, because the mean of its divisors is an integer number (58977936).

Almost surely, 2^228539471 is an apocalyptic number.

228539471 is a deficient number, since it is larger than the sum of its proper divisors (7372273).

228539471 is an equidigital number, since it uses as much as digits as its factorization.

228539471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7372272.

The product of its digits is 120960, while the sum is 41.

The square root of 228539471 is about 15117.5219860928. The cubic root of 228539471 is about 611.3929209699.

The spelling of 228539471 in words is "two hundred twenty-eight million, five hundred thirty-nine thousand, four hundred seventy-one".