28690884998 has 8 divisors (see below), whose sum is σ = 44520338880. Its totient is φ = 13850772040.

The previous prime is 28690884983. The next prime is 28690885007. The reversal of 28690884998 is 89948809682.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×28690884998² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247335158 + ... + 247335273.

It is an arithmetic number, because the mean of its divisors is an integer number (5565042360).

Almost surely, 2^28690884998 is an apocalyptic number.

28690884998 is a deficient number, since it is larger than the sum of its proper divisors (15829453882).

28690884998 is a wasteful number, since it uses less digits than its factorization.

28690884998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494670462.

The product of its (nonzero) digits is 143327232, while the sum is 71.

The spelling of 28690884998 in words is "twenty-eight billion, six hundred ninety million, eight hundred eighty-four thousand, nine hundred ninety-eight".