228695913 has 32 divisors (see below), whose sum is σ = 360720000. Its totient is φ = 142788096.

The previous prime is 228695911. The next prime is 228695939. The reversal of 228695913 is 319596822.

It is not a de Polignac number, because 228695913 - 2¹ = 228695911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228695911) 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, 43153 + ... + 48161.

It is an arithmetic number, because the mean of its divisors is an integer number (11272500).

Almost surely, 2^228695913 is an apocalyptic number.

It is an amenable number.

228695913 is a deficient number, since it is larger than the sum of its proper divisors (132024087).

228695913 is a wasteful number, since it uses less digits than its factorization.

228695913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5126 (or 5120 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 228695913 is about 15122.6952954822. The cubic root of 228695913 is about 611.5323946382.

Subtracting 228695913 from its reverse (319596822), we obtain a palindrome (90900909).

It can be divided in two parts, 22869 and 5913, that added together give a palindrome (28782).

The spelling of 228695913 in words is "two hundred twenty-eight million, six hundred ninety-five thousand, nine hundred thirteen".