228697489 has 8 divisors (see below), whose sum is σ = 229901760. Its totient is φ = 227497200.

The previous prime is 228697477. The next prime is 228697493. The reversal of 228697489 is 984796822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 228697489 - 2⁵ = 228697457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228697429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215019 + ... + 216079.

It is an arithmetic number, because the mean of its divisors is an integer number (28737720).

Almost surely, 2^228697489 is an apocalyptic number.

It is an amenable number.

228697489 is a deficient number, since it is larger than the sum of its proper divisors (1204271).

228697489 is a wasteful number, since it uses less digits than its factorization.

228697489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1991.

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

The square root of 228697489 is about 15122.7474025059. The cubic root of 228697489 is about 611.5337993752.

The spelling of 228697489 in words is "two hundred twenty-eight million, six hundred ninety-seven thousand, four hundred eighty-nine".