28207752707 has 16 divisors (see below), whose sum is σ = 30572277120. Its totient is φ = 25922020992.

The previous prime is 28207752691. The next prime is 28207752709. The reversal of 28207752707 is 70725770282.

It is a cyclic number.

It is not a de Polignac number, because 28207752707 - 2⁴ = 28207752691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28207752709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3020948 + ... + 3030270.

It is an arithmetic number, because the mean of its divisors is an integer number (1910767320).

Almost surely, 2^28207752707 is an apocalyptic number.

28207752707 is a deficient number, since it is larger than the sum of its proper divisors (2364524413).

28207752707 is a wasteful number, since it uses less digits than its factorization.

28207752707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13522.

The product of its (nonzero) digits is 768320, while the sum is 47.

The spelling of 28207752707 in words is "twenty-eight billion, two hundred seven million, seven hundred fifty-two thousand, seven hundred seven".