228080891 has 8 divisors (see below), whose sum is σ = 245457504. Its totient is φ = 211144320.

The previous prime is 228080873. The next prime is 228080893. The reversal of 228080891 is 198080822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228080891 - 2²² = 223886587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228080893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108935 + ... + 111008.

It is an arithmetic number, because the mean of its divisors is an integer number (30682188).

Almost surely, 2^228080891 is an apocalyptic number.

228080891 is a deficient number, since it is larger than the sum of its proper divisors (17376613).

228080891 is a wasteful number, since it uses less digits than its factorization.

228080891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220021.

The product of its (nonzero) digits is 18432, while the sum is 38.

The square root of 228080891 is about 15102.3472016770. The cubic root of 228080891 is about 610.9837133136.

The spelling of 228080891 in words is "two hundred twenty-eight million, eighty thousand, eight hundred ninety-one".