28906436784 has 20 divisors (see below), whose sum is σ = 74674961816. Its totient is φ = 9635478912.

The previous prime is 28906436773. The next prime is 28906436843. The reversal of 28906436784 is 48763460982.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 301108669 + ... + 301108764.

Almost surely, 2^28906436784 is an apocalyptic number.

28906436784 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28906436784 is an abundant number, since it is smaller than the sum of its proper divisors (45768525032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28906436784 is a wasteful number, since it uses less digits than its factorization.

28906436784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602217444 (or 602217438 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 57.

The spelling of 28906436784 in words is "twenty-eight billion, nine hundred six million, four hundred thirty-six thousand, seven hundred eighty-four".