28931463120 has 80 divisors (see below), whose sum is σ = 102500046720. Its totient is φ = 6612905472.

The previous prime is 28931463109. The next prime is 28931463151. The reversal of 28931463120 is 2136413982.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 8608875 + ... + 8612234.

It is an arithmetic number, because the mean of its divisors is an integer number (1281250584).

Almost surely, 2^28931463120 is an apocalyptic number.

28931463120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28931463120 is an abundant number, since it is smaller than the sum of its proper divisors (73568583600).

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

28931463120 is a wasteful number, since it uses less digits than its factorization.

28931463120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17221132 (or 17221126 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 39.

The spelling of 28931463120 in words is "twenty-eight billion, nine hundred thirty-one million, four hundred sixty-three thousand, one hundred twenty".