228145085 has 8 divisors (see below), whose sum is σ = 312884736. Its totient is φ = 156442320.

The previous prime is 228145061. The next prime is 228145091. The reversal of 228145085 is 580541822.

It is a happy number.

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

It is not a de Polignac number, because 228145085 - 2¹² = 228140989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35), and also a Moran number because the ratio is a prime number: 6518431 = 228145085 / (2 + 2 + 8 + 1 + 4 + 5 + 0 + 8 + 5).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3259181 + ... + 3259250.

It is an arithmetic number, because the mean of its divisors is an integer number (39110592).

Almost surely, 2^228145085 is an apocalyptic number.

It is an amenable number.

228145085 is a deficient number, since it is larger than the sum of its proper divisors (84739651).

228145085 is an equidigital number, since it uses as much as digits as its factorization.

228145085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6518443.

The product of its (nonzero) digits is 25600, while the sum is 35.

The square root of 228145085 is about 15104.4723509297. The cubic root of 228145085 is about 611.0410289575.

The spelling of 228145085 in words is "two hundred twenty-eight million, one hundred forty-five thousand, eighty-five".