228687371 has 4 divisors (see below), whose sum is σ = 249477144. Its totient is φ = 207897600.

The previous prime is 228687323. The next prime is 228687377. The reversal of 228687371 is 173786822.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 228687371 - 2¹⁰ = 228686347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228687377) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10394870 + ... + 10394891.

It is an arithmetic number, because the mean of its divisors is an integer number (62369286).

Almost surely, 2^228687371 is an apocalyptic number.

228687371 is a deficient number, since it is larger than the sum of its proper divisors (20789773).

228687371 is a wasteful number, since it uses less digits than its factorization.

228687371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20789772.

The product of its digits is 225792, while the sum is 44.

The square root of 228687371 is about 15122.4128696448. The cubic root of 228687371 is about 611.5247807800.

The spelling of 228687371 in words is "two hundred twenty-eight million, six hundred eighty-seven thousand, three hundred seventy-one".