28757801307 has 24 divisors (see below), whose sum is σ = 41189698800. Its totient is φ = 17841319936.

The previous prime is 28757801263. The next prime is 28757801333. The reversal of 28757801307 is 70310875782.

It is not a de Polignac number, because 28757801307 - 2¹⁶ = 28757735771 is a prime.

It is a super-2 number, since 2×28757801307² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28757801357) 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, 109182 + ... + 263507.

It is an arithmetic number, because the mean of its divisors is an integer number (1716237450).

Almost surely, 2^28757801307 is an apocalyptic number.

28757801307 is a deficient number, since it is larger than the sum of its proper divisors (12431897493).

28757801307 is a wasteful number, since it uses less digits than its factorization.

28757801307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372815 (or 372798 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 48.

The spelling of 28757801307 in words is "twenty-eight billion, seven hundred fifty-seven million, eight hundred one thousand, three hundred seven".