228497386897 has 8 divisors (see below), whose sum is σ = 248251757544. Its totient is φ = 209054108928.

The previous prime is 228497386849. The next prime is 228497386963. The reversal of 228497386897 is 798683794822.

It can be written as a sum of positive squares in 4 ways, for example, as 39801846016 + 188695540881 = 199504^2 + 434391^2 .

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 228497386897 - 2³¹ = 226349903249 is a prime.

It is a super-2 number, since 2×228497386897² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228497786897) 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, 77771638 + ... + 77774575.

It is an arithmetic number, because the mean of its divisors is an integer number (31031469693).

Almost surely, 2^228497386897 is an apocalyptic number.

It is an amenable number.

228497386897 is a deficient number, since it is larger than the sum of its proper divisors (19754370647).

228497386897 is a wasteful number, since it uses less digits than its factorization.

228497386897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155546339.

The product of its digits is 585252864, while the sum is 73.

The spelling of 228497386897 in words is "two hundred twenty-eight billion, four hundred ninety-seven million, three hundred eighty-six thousand, eight hundred ninety-seven".