104821560 has 128 divisors (see below), whose sum is σ = 354585600. Its totient is φ = 27538560.

The previous prime is 104821559. The next prime is 104821597. The reversal of 104821560 is 65128401.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 75997 + ... + 77363.

It is an arithmetic number, because the mean of its divisors is an integer number (2770200).

Almost surely, 2^104821560 is an apocalyptic number.

104821560 is a gapful number since it is divisible by the number (10) 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 104821560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177292800).

104821560 is an abundant number, since it is smaller than the sum of its proper divisors (249764040).

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

104821560 is a wasteful number, since it uses less digits than its factorization.

104821560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1458 (or 1448 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 104821560 is about 10238.2400831393. The cubic root of 104821560 is about 471.5020003686.

Adding to 104821560 its reverse (65128401), we get a palindrome (169949961).

The spelling of 104821560 in words is "one hundred four million, eight hundred twenty-one thousand, five hundred sixty".