28795887074 has 4 divisors (see below), whose sum is σ = 43193830614. Its totient is φ = 14397943536.

The previous prime is 28795887059. The next prime is 28795887079. The reversal of 28795887074 is 47078859782.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 19249620049 + 9546267025 = 138743^2 + 97705^2 .

It is a super-2 number, since 2×28795887074² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28795887074.

It is not an unprimeable number, because it can be changed into a prime (28795887079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7198971767 + ... + 7198971770.

Almost surely, 2^28795887074 is an apocalyptic number.

28795887074 is a deficient number, since it is larger than the sum of its proper divisors (14397943540).

28795887074 is a wasteful number, since it uses less digits than its factorization.

28795887074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14397943539.

The product of its (nonzero) digits is 63221760, while the sum is 65.

The spelling of 28795887074 in words is "twenty-eight billion, seven hundred ninety-five million, eight hundred eighty-seven thousand, seventy-four".