28154939798 has 8 divisors (see below), whose sum is σ = 42233275920. Its totient is φ = 14077181160.

The previous prime is 28154939777. The next prime is 28154939801. The reversal of 28154939798 is 89793945182.

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

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, 10928 + ... + 237548.

It is an arithmetic number, because the mean of its divisors is an integer number (5279159490).

Almost surely, 2^28154939798 is an apocalyptic number.

28154939798 is a deficient number, since it is larger than the sum of its proper divisors (14078336122).

28154939798 is a wasteful number, since it uses less digits than its factorization.

28154939798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288742.

The product of its digits is 39191040, while the sum is 65.

The spelling of 28154939798 in words is "twenty-eight billion, one hundred fifty-four million, nine hundred thirty-nine thousand, seven hundred ninety-eight".