501104640 has 120 divisors (see below), whose sum is σ = 1604272320. Its totient is φ = 133562368.

The previous prime is 501104629. The next prime is 501104687. The reversal of 501104640 is 46401105.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×501104640² = 502211720459059200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 244741 + ... + 246779.

It is an arithmetic number, because the mean of its divisors is an integer number (13368936).

Almost surely, 2^501104640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 501104640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (802136160).

501104640 is an abundant number, since it is smaller than the sum of its proper divisors (1103167680).

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

501104640 is an equidigital number, since it uses as much as digits as its factorization.

501104640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2075 (or 2049 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 501104640 is about 22385.3666487730. The cubic root of 501104640 is about 794.2845983013.

Adding to 501104640 its reverse (46401105), we get a palindrome (547505745).

The spelling of 501104640 in words is "five hundred one million, one hundred four thousand, six hundred forty".