228496987 has 4 divisors (see below), whose sum is σ = 229232016. Its totient is φ = 227761960.

The previous prime is 228496979. The next prime is 228496997. The reversal of 228496987 is 789694822.

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 228496987 - 2³ = 228496979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228496997) 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 3 ways as a sum of consecutive naturals, for example, 367048 + ... + 367669.

It is an arithmetic number, because the mean of its divisors is an integer number (57308004).

Almost surely, 2^228496987 is an apocalyptic number.

228496987 is a deficient number, since it is larger than the sum of its proper divisors (735029).

228496987 is an equidigital number, since it uses as much as digits as its factorization.

228496987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 735028.

The product of its digits is 3483648, while the sum is 55.

The square root of 228496987 is about 15116.1167963204. The cubic root of 228496987 is about 611.3550339674.

The spelling of 228496987 in words is "two hundred twenty-eight million, four hundred ninety-six thousand, nine hundred eighty-seven".