228982787 has 4 divisors (see below), whose sum is σ = 249799416. Its totient is φ = 208166160.

The previous prime is 228982777. The next prime is 228982801. The reversal of 228982787 is 787289822.

It is a happy number.

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 228982787 - 2¹⁰ = 228981763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228982757) 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, 10408298 + ... + 10408319.

It is an arithmetic number, because the mean of its divisors is an integer number (62449854).

Almost surely, 2^228982787 is an apocalyptic number.

228982787 is a deficient number, since it is larger than the sum of its proper divisors (20816629).

228982787 is a wasteful number, since it uses less digits than its factorization.

228982787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20816628.

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

The square root of 228982787 is about 15132.1772062053. The cubic root of 228982787 is about 611.7879879560.

The spelling of 228982787 in words is "two hundred twenty-eight million, nine hundred eighty-two thousand, seven hundred eighty-seven".