228714861 has 4 divisors (see below), whose sum is σ = 304953152. Its totient is φ = 152476572.

The previous prime is 228714853. The next prime is 228714881. The reversal of 228714861 is 168417822.

It is a happy number.

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 not a de Polignac number, because 228714861 - 2³ = 228714853 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 (228714841) 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, 38119141 + ... + 38119146.

It is an arithmetic number, because the mean of its divisors is an integer number (76238288).

Almost surely, 2^228714861 is an apocalyptic number.

It is an amenable number.

228714861 is a deficient number, since it is larger than the sum of its proper divisors (76238291).

228714861 is an equidigital number, since it uses as much as digits as its factorization.

228714861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76238290.

The product of its digits is 43008, while the sum is 39.

The square root of 228714861 is about 15123.3217581324. The cubic root of 228714861 is about 611.5492831426.

The spelling of 228714861 in words is "two hundred twenty-eight million, seven hundred fourteen thousand, eight hundred sixty-one".