28445366808846 has 144 divisors (see below), whose sum is σ = 67188432270960. Its totient is φ = 8693392780800.

The previous prime is 28445366808823. The next prime is 28445366808857. The reversal of 28445366808846 is 64880866354482.

28445366808846 is a `hidden beast` number, since 2 + 8 + 4 + 4 + 536 + 6 + 8 + 0 + 8 + 84 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 360124185 + ... + 360203163.

It is an arithmetic number, because the mean of its divisors is an integer number (466586335215).

Almost surely, 2^{28445366808846} is an apocalyptic number.

28445366808846 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 28445366808846, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33594216135480).

28445366808846 is an abundant number, since it is smaller than the sum of its proper divisors (38743065462114).

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

28445366808846 is a wasteful number, since it uses less digits than its factorization.

28445366808846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79811 (or 79795 counting only the distinct ones).

The product of its (nonzero) digits is 1698693120, while the sum is 72.

The spelling of 28445366808846 in words is "twenty-eight trillion, four hundred forty-five billion, three hundred sixty-six million, eight hundred eight thousand, eight hundred forty-six".