228201687 has 24 divisors (see below), whose sum is σ = 377110656. Its totient is φ = 130263696.

The previous prime is 228201683. The next prime is 228201689. The reversal of 228201687 is 786102822.

It is a happy number.

It is not a de Polignac number, because 228201687 - 2² = 228201683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228201683) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111568 + ... + 113594.

It is an arithmetic number, because the mean of its divisors is an integer number (15712944).

Almost surely, 2^228201687 is an apocalyptic number.

228201687 is a deficient number, since it is larger than the sum of its proper divisors (148908969).

228201687 is a wasteful number, since it uses less digits than its factorization.

228201687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3827 (or 3824 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 228201687 is about 15106.3459181895. The cubic root of 228201687 is about 611.0915571619.

The spelling of 228201687 in words is "two hundred twenty-eight million, two hundred one thousand, six hundred eighty-seven".