28491527938 has 16 divisors (see below), whose sum is σ = 44990316000. Its totient is φ = 13494879072.

The previous prime is 28491527899. The next prime is 28491527951. The reversal of 28491527938 is 83972519482.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 613293 + ... + 658111.

It is an arithmetic number, because the mean of its divisors is an integer number (2811894750).

Almost surely, 2^28491527938 is an apocalyptic number.

28491527938 is a deficient number, since it is larger than the sum of its proper divisors (16498788062).

28491527938 is a wasteful number, since it uses less digits than its factorization.

28491527938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61569.

The product of its digits is 8709120, while the sum is 58.

The spelling of 28491527938 in words is "twenty-eight billion, four hundred ninety-one million, five hundred twenty-seven thousand, nine hundred thirty-eight".