28688858098 has 4 divisors (see below), whose sum is σ = 43033287150. Its totient is φ = 14344429048.

The previous prime is 28688858063. The next prime is 28688858117. The reversal of 28688858098 is 89085888682.

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., 14400720009 + 14288138089 = 120003^2 + 119533^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7172214523 + ... + 7172214526.

Almost surely, 2^28688858098 is an apocalyptic number.

28688858098 is a deficient number, since it is larger than the sum of its proper divisors (14344429052).

28688858098 is a wasteful number, since it uses less digits than its factorization.

28688858098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14344429051.

The product of its (nonzero) digits is 141557760, while the sum is 70.

The spelling of 28688858098 in words is "twenty-eight billion, six hundred eighty-eight million, eight hundred fifty-eight thousand, ninety-eight".