28318054624020 has 432 divisors, whose sum is σ = 109772241720960. Its totient is φ = 5771320823808.

The previous prime is 28318054624009. The next prime is 28318054624021. The reversal of 28318054624020 is 2042645081382.

28318054624020 is a `hidden beast` number, since 2 + 8 + 3 + 1 + 80 + 546 + 2 + 4 + 0 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28318054624021) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 4872162 + ... + 8965158.

Almost surely, 2^{28318054624020} is an apocalyptic number.

28318054624020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28318054624020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (54886120860480).

28318054624020 is an abundant number, since it is smaller than the sum of its proper divisors (81454187096940).

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

28318054624020 is a wasteful number, since it uses less digits than its factorization.

28318054624020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4093072 (or 4093050 counting only the distinct ones).

The product of its (nonzero) digits is 737280, while the sum is 45.

The spelling of 28318054624020 in words is "twenty-eight trillion, three hundred eighteen billion, fifty-four million, six hundred twenty-four thousand, twenty".