28994187982 has 16 divisors (see below), whose sum is σ = 43580627712. Its totient is φ = 14467344480.

The previous prime is 28994187953. The next prime is 28994187991. The reversal of 28994187982 is 28978149982.

It is a congruent number.

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, 2038648 + ... + 2052820.

It is an arithmetic number, because the mean of its divisors is an integer number (2723789232).

Almost surely, 2^28994187982 is an apocalyptic number.

28994187982 is a deficient number, since it is larger than the sum of its proper divisors (14586439730).

28994187982 is a wasteful number, since it uses less digits than its factorization.

28994187982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16203.

The product of its digits is 41803776, while the sum is 67.

The spelling of 28994187982 in words is "twenty-eight billion, nine hundred ninety-four million, one hundred eighty-seven thousand, nine hundred eighty-two".