28301665472 has 14 divisors (see below), whose sum is σ = 56161117548. Its totient is φ = 14150832704.

The previous prime is 28301665423. The next prime is 28301665487. The reversal of 28301665472 is 27456610382.

It is a super-3 number, since 3×28301665472³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221106698 + ... + 221106825.

Almost surely, 2^28301665472 is an apocalyptic number.

It is an amenable number.

28301665472 is a deficient number, since it is larger than the sum of its proper divisors (27859452076).

28301665472 is an equidigital number, since it uses as much as digits as its factorization.

28301665472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442213535 (or 442213525 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 28301665472 in words is "twenty-eight billion, three hundred one million, six hundred sixty-five thousand, four hundred seventy-two".