228288188481 has 8 divisors (see below), whose sum is σ = 304386577920. Its totient is φ = 152190962352.

The previous prime is 228288188461. The next prime is 228288188539. The reversal of 228288188481 is 184881882822.

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

It is not a de Polignac number, because 228288188481 - 2³¹ = 226140704833 is a prime.

It is a super-2 number, since 2×228288188481² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228288188461) 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, 404691 + ... + 787623.

It is an arithmetic number, because the mean of its divisors is an integer number (38048322240).

Almost surely, 2^228288188481 is an apocalyptic number.

It is an amenable number.

228288188481 is a deficient number, since it is larger than the sum of its proper divisors (76098389439).

228288188481 is a wasteful number, since it uses less digits than its factorization.

228288188481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581655.

The product of its digits is 8388608, while the sum is 60.

The spelling of 228288188481 in words is "two hundred twenty-eight billion, two hundred eighty-eight million, one hundred eighty-eight thousand, four hundred eighty-one".