228072471 has 16 divisors (see below), whose sum is σ = 332190720. Its totient is φ = 138038720.

The previous prime is 228072469. The next prime is 228072479. The reversal of 228072471 is 174270822.

It is a cyclic number.

It is not a de Polignac number, because 228072471 - 2¹ = 228072469 is a prime.

It is a super-3 number, since 3×228072471³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228072479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22426 + ... + 30968.

It is an arithmetic number, because the mean of its divisors is an integer number (20761920).

Almost surely, 2^228072471 is an apocalyptic number.

228072471 is a deficient number, since it is larger than the sum of its proper divisors (104118249).

228072471 is a wasteful number, since it uses less digits than its factorization.

228072471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9366.

The product of its (nonzero) digits is 12544, while the sum is 33.

The square root of 228072471 is about 15102.0684344894. The cubic root of 228072471 is about 610.9761947147.

The spelling of 228072471 in words is "two hundred twenty-eight million, seventy-two thousand, four hundred seventy-one".