501421984 has 24 divisors (see below), whose sum is σ = 1128199968. Its totient is φ = 214895040.

The previous prime is 501421979. The next prime is 501421997. The reversal of 501421984 is 489124105.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1119022 + ... + 1119469.

It is an arithmetic number, because the mean of its divisors is an integer number (47008332).

Almost surely, 2^501421984 is an apocalyptic number.

It is an amenable number.

501421984 is an abundant number, since it is smaller than the sum of its proper divisors (626777984).

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

501421984 is a wasteful number, since it uses less digits than its factorization.

501421984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238508 (or 2238500 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 501421984 is about 22392.4537288793. The cubic root of 501421984 is about 794.4522334557.

The spelling of 501421984 in words is "five hundred one million, four hundred twenty-one thousand, nine hundred eighty-four".