228488787 has 6 divisors (see below), whose sum is σ = 330039372. Its totient is φ = 152325852.

The previous prime is 228488773. The next prime is 228488797. The reversal of 228488787 is 787884822.

It is not a de Polignac number, because 228488787 - 2⁶ = 228488723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228488717) 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 5 ways as a sum of consecutive naturals, for example, 12693813 + ... + 12693830.

It is an arithmetic number, because the mean of its divisors is an integer number (55006562).

Almost surely, 2^228488787 is an apocalyptic number.

228488787 is a deficient number, since it is larger than the sum of its proper divisors (101550585).

228488787 is a wasteful number, since it uses less digits than its factorization.

228488787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25387649 (or 25387646 counting only the distinct ones).

The product of its digits is 3211264, while the sum is 54.

The square root of 228488787 is about 15115.8455602060. The cubic root of 228488787 is about 611.3477207109.

The spelling of 228488787 in words is "two hundred twenty-eight million, four hundred eighty-eight thousand, seven hundred eighty-seven".