228636345 has 32 divisors (see below), whose sum is σ = 419069952. Its totient is φ = 104271552.

The previous prime is 228636337. The next prime is 228636347. The reversal of 228636345 is 543636822.

It is a happy number.

It is not a de Polignac number, because 228636345 - 2³ = 228636337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228636347) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46264 + ... + 50966.

It is an arithmetic number, because the mean of its divisors is an integer number (13095936).

Almost surely, 2^228636345 is an apocalyptic number.

It is an amenable number.

228636345 is a deficient number, since it is larger than the sum of its proper divisors (190433607).

228636345 is a wasteful number, since it uses less digits than its factorization.

228636345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5181.

The product of its digits is 207360, while the sum is 39.

The square root of 228636345 is about 15120.7256770302. The cubic root of 228636345 is about 611.4792951251.

The spelling of 228636345 in words is "two hundred twenty-eight million, six hundred thirty-six thousand, three hundred forty-five".