228618907 has 8 divisors (see below), whose sum is σ = 264073392. Its totient is φ = 195609600.

The previous prime is 228618883. The next prime is 228618913. The reversal of 228618907 is 709816822.

228618907 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 228618907 - 2⁷ = 228618779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228618937) 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, 611094 + ... + 611467.

It is an arithmetic number, because the mean of its divisors is an integer number (33009174).

Almost surely, 2^228618907 is an apocalyptic number.

228618907 is a deficient number, since it is larger than the sum of its proper divisors (35454485).

228618907 is a wasteful number, since it uses less digits than its factorization.

228618907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1222589.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 228618907 is about 15120.1490402707. The cubic root of 228618907 is about 611.4637489717.

The spelling of 228618907 in words is "two hundred twenty-eight million, six hundred eighteen thousand, nine hundred seven".