104821000 has 64 divisors (see below), whose sum is σ = 251999280. Its totient is φ = 40780800.

The previous prime is 104820979. The next prime is 104821019. The reversal of 104821000 is 128401.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 12545764 + 92275236 = 3542^2 + 9606^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35584 + ... + 38416.

Almost surely, 2^104821000 is an apocalyptic number.

104821000 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 104821000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125999640).

104821000 is an abundant number, since it is smaller than the sum of its proper divisors (147178280).

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

104821000 is a wasteful number, since it uses less digits than its factorization.

104821000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891 (or 2877 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 104821000 is about 10238.2127346525. The cubic root of 104821000 is about 471.5011607144.

Adding to 104821000 its reverse (128401), we get a palindrome (104949401).

The spelling of 104821000 in words is "one hundred four million, eight hundred twenty-one thousand".