28573471538178 has 256 divisors, whose sum is σ = 72579732480000. Its totient is φ = 7311108169728.

The previous prime is 28573471538177. The next prime is 28573471538179. The reversal of 28573471538178 is 87183517437582.

It is an interprime number because it is at equal distance from previous prime (28573471538177) and next prime (28573471538179).

It is a super-4 number, since 4×28573471538178⁴ (a number of 55 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (69).

It is not an unprimeable number, because it can be changed into a prime (28573471538177) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4980556926 + ... + 4980562662.

It is an arithmetic number, because the mean of its divisors is an integer number (283514580000).

Almost surely, 2^{28573471538178} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28573471538178, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36289866240000).

28573471538178 is an abundant number, since it is smaller than the sum of its proper divisors (44006260941822).

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

28573471538178 is a wasteful number, since it uses less digits than its factorization.

28573471538178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8929.

The product of its digits is 316108800, while the sum is 69.

The spelling of 28573471538178 in words is "twenty-eight trillion, five hundred seventy-three billion, four hundred seventy-one million, five hundred thirty-eight thousand, one hundred seventy-eight".