228643937 has 8 divisors (see below), whose sum is σ = 231501600. Its totient is φ = 225792864.

The previous prime is 228643903. The next prime is 228643963. The reversal of 228643937 is 739346822.

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

It is a cyclic number.

It is not a de Polignac number, because 228643937 - 2⁶ = 228643873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228643997) 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, 139718 + ... + 141344.

It is an arithmetic number, because the mean of its divisors is an integer number (28937700).

Almost surely, 2^228643937 is an apocalyptic number.

It is an amenable number.

228643937 is a deficient number, since it is larger than the sum of its proper divisors (2857663).

228643937 is a wasteful number, since it uses less digits than its factorization.

228643937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3295.

The product of its digits is 435456, while the sum is 44.

The square root of 228643937 is about 15120.9767210984. The cubic root of 228643937 is about 611.4860632228.

The spelling of 228643937 in words is "two hundred twenty-eight million, six hundred forty-three thousand, nine hundred thirty-seven".