28901400180 has 48 divisors (see below), whose sum is σ = 80931298560. Its totient is φ = 7706337408.

The previous prime is 28901400131. The next prime is 28901400181. The reversal of 28901400180 is 8100410982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28901400181) by changing a digit.

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, 1265301 + ... + 1287939.

It is an arithmetic number, because the mean of its divisors is an integer number (1686068720).

Almost surely, 2^28901400180 is an apocalyptic number.

28901400180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28901400180 is an abundant number, since it is smaller than the sum of its proper divisors (52029898380).

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

28901400180 is a wasteful number, since it uses less digits than its factorization.

28901400180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43928 (or 43926 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The spelling of 28901400180 in words is "twenty-eight billion, nine hundred one million, four hundred thousand, one hundred eighty".