228643953 has 8 divisors (see below), whose sum is σ = 304944768. Its totient is φ = 152386224.

The previous prime is 228643903. The next prime is 228643963. The reversal of 228643953 is 359346822.

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

It is not a de Polignac number, because 228643953 - 2⁶ = 228643889 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (228643903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4851 + ... + 21927.

It is an arithmetic number, because the mean of its divisors is an integer number (38118096).

Almost surely, 2^228643953 is an apocalyptic number.

It is an amenable number.

228643953 is a deficient number, since it is larger than the sum of its proper divisors (76300815).

228643953 is a wasteful number, since it uses less digits than its factorization.

228643953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21543.

The product of its digits is 311040, while the sum is 42.

The square root of 228643953 is about 15120.9772501648. The cubic root of 228643953 is about 611.4860774863.

The spelling of 228643953 in words is "two hundred twenty-eight million, six hundred forty-three thousand, nine hundred fifty-three".