228456973385 has 8 divisors (see below), whose sum is σ = 278642603976. Its totient is φ = 179769421440.

The previous prime is 228456973379. The next prime is 228456973399. The reversal of 228456973385 is 583379654822.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5088254224 + 223368719161 = 71332^2 + 472619^2 .

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

It is not a de Polignac number, because 228456973385 - 2¹² = 228456969289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374519324 + ... + 374519933.

It is an arithmetic number, because the mean of its divisors is an integer number (34830325497).

Almost surely, 2^228456973385 is an apocalyptic number.

It is an amenable number.

228456973385 is a deficient number, since it is larger than the sum of its proper divisors (50185630591).

228456973385 is an equidigital number, since it uses as much as digits as its factorization.

228456973385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749039323.

The product of its digits is 87091200, while the sum is 62.

The spelling of 228456973385 in words is "two hundred twenty-eight billion, four hundred fifty-six million, nine hundred seventy-three thousand, three hundred eighty-five".