104545728 has 280 divisors, whose sum is σ = 367824512. Its totient is φ = 28740096.

The previous prime is 104545723. The next prime is 104545747. The reversal of 104545728 is 827545401.

104545728 is a `hidden beast` number, since 104 + 545 + 7 + 2 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 104545692 and 104545701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104545723) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1560351 + ... + 1560417.

Almost surely, 2^104545728 is an apocalyptic number.

104545728 is a gapful number since it is divisible by the number (18) 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 104545728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183912256).

104545728 is an abundant number, since it is smaller than the sum of its proper divisors (263278784).

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

104545728 is an equidigital number, since it uses as much as digits as its factorization.

104545728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 36.

The square root of 104545728 is about 10224.7605350932. The cubic root of 104545728 is about 471.0880601303.

The spelling of 104545728 in words is "one hundred four million, five hundred forty-five thousand, seven hundred twenty-eight".