28541685504 has 288 divisors, whose sum is σ = 82755509760. Its totient is φ = 8708603904.

The previous prime is 28541685437. The next prime is 28541685553. The reversal of 28541685504 is 40558614582.

It is a super-2 number, since 2×28541685504² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40255902 + ... + 40256610.

It is an arithmetic number, because the mean of its divisors is an integer number (287345520).

Almost surely, 2^28541685504 is an apocalyptic number.

28541685504 is a gapful number since it is divisible by the number (24) 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 28541685504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41377754880).

28541685504 is an abundant number, since it is smaller than the sum of its proper divisors (54213824256).

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

28541685504 is a wasteful number, since it uses less digits than its factorization.

28541685504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847 (or 833 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 48.

The spelling of 28541685504 in words is "twenty-eight billion, five hundred forty-one million, six hundred eighty-five thousand, five hundred four".