228477129 has 4 divisors (see below), whose sum is σ = 304636176. Its totient is φ = 152318084.

The previous prime is 228477113. The next prime is 228477157. The reversal of 228477129 is 921774822.

228477129 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228477129 - 2⁴ = 228477113 is a prime.

It is a super-3 number, since 3×228477129³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (228470129) 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, 38079519 + ... + 38079524.

It is an arithmetic number, because the mean of its divisors is an integer number (76159044).

Almost surely, 2^228477129 is an apocalyptic number.

It is an amenable number.

228477129 is a deficient number, since it is larger than the sum of its proper divisors (76159047).

228477129 is an equidigital number, since it uses as much as digits as its factorization.

228477129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76159046.

The product of its digits is 112896, while the sum is 42.

The square root of 228477129 is about 15115.4599334589. The cubic root of 228477129 is about 611.3373230993.

The spelling of 228477129 in words is "two hundred twenty-eight million, four hundred seventy-seven thousand, one hundred twenty-nine".