228333237 has 8 divisors (see below), whose sum is σ = 332121120. Its totient is φ = 138383760.

The previous prime is 228333233. The next prime is 228333251. The reversal of 228333237 is 732333822.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 228333237 - 2² = 228333233 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 6919189 = 228333237 / (2 + 2 + 8 + 3 + 3 + 3 + 2 + 3 + 7).

It is a junction number, because it is equal to n+sod(n) for n = 228333198 and 228333207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228333233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3459562 + ... + 3459627.

It is an arithmetic number, because the mean of its divisors is an integer number (41515140).

Almost surely, 2^228333237 is an apocalyptic number.

It is an amenable number.

228333237 is a deficient number, since it is larger than the sum of its proper divisors (103787883).

228333237 is a wasteful number, since it uses less digits than its factorization.

228333237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6919203.

The product of its digits is 36288, while the sum is 33.

The square root of 228333237 is about 15110.6994212710. The cubic root of 228333237 is about 611.2089586489.

The spelling of 228333237 in words is "two hundred twenty-eight million, three hundred thirty-three thousand, two hundred thirty-seven".