228989711 has 4 divisors (see below), whose sum is σ = 242459712. Its totient is φ = 215519712.

The previous prime is 228989701. The next prime is 228989731. The reversal of 228989711 is 117989822.

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 228989711 - 2²⁶ = 161880847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228989701) 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, 6734975 + ... + 6735008.

It is an arithmetic number, because the mean of its divisors is an integer number (60614928).

Almost surely, 2^228989711 is an apocalyptic number.

228989711 is a deficient number, since it is larger than the sum of its proper divisors (13470001).

228989711 is a wasteful number, since it uses less digits than its factorization.

228989711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13470000.

The product of its digits is 145152, while the sum is 47.

The square root of 228989711 is about 15132.4059884739. The cubic root of 228989711 is about 611.7941543254.

The spelling of 228989711 in words is "two hundred twenty-eight million, nine hundred eighty-nine thousand, seven hundred eleven".