228671446729 has 32 divisors (see below), whose sum is σ = 260919014400. Its totient is φ = 198499472640.

The previous prime is 228671446721. The next prime is 228671446739. The reversal of 228671446729 is 927644176822.

It is a cyclic number.

It is not a de Polignac number, because 228671446729 - 2³ = 228671446721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (228671446721) 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, 19361544 + ... + 19373350.

It is an arithmetic number, because the mean of its divisors is an integer number (8153719200).

Almost surely, 2^228671446729 is an apocalyptic number.

228671446729 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

228671446729 is a deficient number, since it is larger than the sum of its proper divisors (32247567671).

228671446729 is a wasteful number, since it uses less digits than its factorization.

228671446729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12513.

The product of its digits is 16257024, while the sum is 58.

The spelling of 228671446729 in words is "two hundred twenty-eight billion, six hundred seventy-one million, four hundred forty-six thousand, seven hundred twenty-nine".