228481137 has 24 divisors (see below), whose sum is σ = 348004800. Its totient is φ = 144052128.

The previous prime is 228481133. The next prime is 228481153. The reversal of 228481137 is 731184822.

It is not a de Polignac number, because 228481137 - 2² = 228481133 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228481133) 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, 172564 + ... + 173882.

It is an arithmetic number, because the mean of its divisors is an integer number (14500200).

Almost surely, 2^228481137 is an apocalyptic number.

It is an amenable number.

228481137 is a deficient number, since it is larger than the sum of its proper divisors (119523663).

228481137 is a wasteful number, since it uses less digits than its factorization.

228481137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2357 (or 2354 counting only the distinct ones).

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

The square root of 228481137 is about 15115.5925123695. The cubic root of 228481137 is about 611.3408978199.

The spelling of 228481137 in words is "two hundred twenty-eight million, four hundred eighty-one thousand, one hundred thirty-seven".