228321143847 has 32 divisors (see below), whose sum is σ = 339094641600. Its totient is φ = 151836102144.

The previous prime is 228321143821. The next prime is 228321143851. The reversal of 228321143847 is 748341123822.

228321143847 is a `hidden beast` number, since 228 + 32 + 1 + 14 + 384 + 7 = 666.

It is not a de Polignac number, because 228321143847 - 2⁶ = 228321143783 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228321143647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18713353 + ... + 18725549.

It is an arithmetic number, because the mean of its divisors is an integer number (10596707550).

Almost surely, 2^228321143847 is an apocalyptic number.

228321143847 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

228321143847 is a deficient number, since it is larger than the sum of its proper divisors (110773497753).

228321143847 is a wasteful number, since it uses less digits than its factorization.

228321143847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13872 (or 13866 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The spelling of 228321143847 in words is "two hundred twenty-eight billion, three hundred twenty-one million, one hundred forty-three thousand, eight hundred forty-seven".