228405886 has 4 divisors (see below), whose sum is σ = 342608832. Its totient is φ = 114202942.

The previous prime is 228405857. The next prime is 228405887. The reversal of 228405886 is 688504822.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228405887) 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 as a sum of consecutive naturals, namely, 57101470 + ... + 57101473.

It is an arithmetic number, because the mean of its divisors is an integer number (85652208).

Almost surely, 2^228405886 is an apocalyptic number.

228405886 is a deficient number, since it is larger than the sum of its proper divisors (114202946).

228405886 is a wasteful number, since it uses less digits than its factorization.

228405886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114202945.

The product of its (nonzero) digits is 245760, while the sum is 43.

The square root of 228405886 is about 15113.1031227872. The cubic root of 228405886 is about 611.2737747509.

The spelling of 228405886 in words is "two hundred twenty-eight million, four hundred five thousand, eight hundred eighty-six".