228989071 has 4 divisors (see below), whose sum is σ = 229711752. Its totient is φ = 228266392.

The previous prime is 228989069. The next prime is 228989077. The reversal of 228989071 is 170989822.

228989071 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 an emirpimes, since its reverse is a distinct semiprime: 170989822 = 2 ⋅85494911.

It is a cyclic number.

It is not a de Polignac number, because 228989071 - 2¹ = 228989069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228989077) 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, 360865 + ... + 361498.

It is an arithmetic number, because the mean of its divisors is an integer number (57427938).

Almost surely, 2^228989071 is an apocalyptic number.

228989071 is a deficient number, since it is larger than the sum of its proper divisors (722681).

228989071 is an equidigital number, since it uses as much as digits as its factorization.

228989071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722680.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 228989071 is about 15132.3848417888. The cubic root of 228989071 is about 611.7935843600.

The spelling of 228989071 in words is "two hundred twenty-eight million, nine hundred eighty-nine thousand, seventy-one".