228897278 has 4 divisors (see below), whose sum is σ = 343345920. Its totient is φ = 114448638.

The previous prime is 228897247. The next prime is 228897283. The reversal of 228897278 is 872798822.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 57224318 + ... + 57224321.

It is an arithmetic number, because the mean of its divisors is an integer number (85836480).

Almost surely, 2^228897278 is an apocalyptic number.

228897278 is a deficient number, since it is larger than the sum of its proper divisors (114448642).

228897278 is a wasteful number, since it uses less digits than its factorization.

228897278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114448641.

The product of its digits is 1806336, while the sum is 53.

The square root of 228897278 is about 15129.3515393093. The cubic root of 228897278 is about 611.7118251828.

The spelling of 228897278 in words is "two hundred twenty-eight million, eight hundred ninety-seven thousand, two hundred seventy-eight".