228702237 has 8 divisors (see below), whose sum is σ = 309935520. Its totient is φ = 149968560.

The previous prime is 228702233. The next prime is 228702239. The reversal of 228702237 is 732207822.

228702237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 228702237 - 2² = 228702233 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 228702198 and 228702207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228702233) 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, 624687 + ... + 625052.

It is an arithmetic number, because the mean of its divisors is an integer number (38741940).

Almost surely, 2^228702237 is an apocalyptic number.

It is an amenable number.

228702237 is a deficient number, since it is larger than the sum of its proper divisors (81233283).

228702237 is a wasteful number, since it uses less digits than its factorization.

228702237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249803.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 228702237 is about 15122.9043837485. The cubic root of 228702237 is about 611.5380313738.

The spelling of 228702237 in words is "two hundred twenty-eight million, seven hundred two thousand, two hundred thirty-seven".