28028352460707 has 24 divisors (see below), whose sum is σ = 41431407116528. Its totient is φ = 18249042873600.

The previous prime is 28028352460613. The next prime is 28028352460721. The reversal of 28028352460707 is 70706425382082.

28028352460707 is a `hidden beast` number, since 2 + 8 + 0 + 2 + 8 + 3 + 5 + 24 + 607 + 0 + 7 = 666.

It is not a de Polignac number, because 28028352460707 - 2⁷ = 28028352460579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28028352460777) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 342394 + ... + 7494927.

Almost surely, 2^{28028352460707} is an apocalyptic number.

28028352460707 is a deficient number, since it is larger than the sum of its proper divisors (13403054655821).

28028352460707 is a wasteful number, since it uses less digits than its factorization.

28028352460707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7846611 (or 7846608 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 54.

Adding to 28028352460707 its sum of digits (54), we get a square (28028352460761 = 5294181²).

The spelling of 28028352460707 in words is "twenty-eight trillion, twenty-eight billion, three hundred fifty-two million, four hundred sixty thousand, seven hundred seven".