104721530 has 32 divisors (see below), whose sum is σ = 208272384. Its totient is φ = 37709056.

The previous prime is 104721527. The next prime is 104721541. The reversal of 104721530 is 35127401.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a junction number, because it is equal to n+sod(n) for n = 104721496 and 104721505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9482 + ... + 17301.

It is an arithmetic number, because the mean of its divisors is an integer number (6508512).

Almost surely, 2^104721530 is an apocalyptic number.

104721530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

104721530 is a deficient number, since it is larger than the sum of its proper divisors (103550854).

104721530 is a wasteful number, since it uses less digits than its factorization.

104721530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26830.

The product of its (nonzero) digits is 840, while the sum is 23.

The square root of 104721530 is about 10233.3538001967. The cubic root of 104721530 is about 471.3519696693.

Adding to 104721530 its reverse (35127401), we get a palindrome (139848931).

The spelling of 104721530 in words is "one hundred four million, seven hundred twenty-one thousand, five hundred thirty".