228243685 has 8 divisors (see below), whose sum is σ = 273973536. Its totient is φ = 182540880.

The previous prime is 228243671. The next prime is 228243689. The reversal of 228243685 is 586342822.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-228243685 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228243689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29382 + ... + 36328.

It is an arithmetic number, because the mean of its divisors is an integer number (34246692).

Almost surely, 2^228243685 is an apocalyptic number.

It is an amenable number.

228243685 is a deficient number, since it is larger than the sum of its proper divisors (45729851).

228243685 is an equidigital number, since it uses as much as digits as its factorization.

228243685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13523.

The product of its digits is 184320, while the sum is 40.

The square root of 228243685 is about 15107.7359322964. The cubic root of 228243685 is about 611.1290430796.

The spelling of 228243685 in words is "two hundred twenty-eight million, two hundred forty-three thousand, six hundred eighty-five".