28714448628 has 36 divisors (see below), whose sum is σ = 72778373668. Its totient is φ = 9545817600.

The previous prime is 28714448617. The next prime is 28714448657. The reversal of 28714448628 is 82684441782.

28714448628 is a `hidden beast` number, since 2 + 8 + 7 + 1 + 4 + 4 + 4 + 8 + 628 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 16337441124 + 12377007504 = 127818^2 + 111252^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1055773 + ... + 1082628.

Almost surely, 2^28714448628 is an apocalyptic number.

It is an amenable number.

28714448628 is an abundant number, since it is smaller than the sum of its proper divisors (44063925040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28714448628 is a wasteful number, since it uses less digits than its factorization.

28714448628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138784 (or 2138779 counting only the distinct ones).

The product of its digits is 5505024, while the sum is 54.

The spelling of 28714448628 in words is "twenty-eight billion, seven hundred fourteen million, four hundred forty-eight thousand, six hundred twenty-eight".