28640700798 has 16 divisors (see below), whose sum is σ = 58678509456. Its totient is φ = 9314048960.

The previous prime is 28640700797. The next prime is 28640700821. The reversal of 28640700798 is 89700704682.

It is a super-3 number, since 3×28640700798³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28640700798.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28640700797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58212561 + ... + 58213052.

It is an arithmetic number, because the mean of its divisors is an integer number (3667406841).

Almost surely, 2^28640700798 is an apocalyptic number.

28640700798 is an abundant number, since it is smaller than the sum of its proper divisors (30037808658).

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

28640700798 is a wasteful number, since it uses less digits than its factorization.

28640700798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116425659.

The product of its (nonzero) digits is 1354752, while the sum is 51.

The spelling of 28640700798 in words is "twenty-eight billion, six hundred forty million, seven hundred thousand, seven hundred ninety-eight".