16481004 has 12 divisors (see below), whose sum is σ = 38455704. Its totient is φ = 5493664.

The previous prime is 16480993. The next prime is 16481029. The reversal of 16481004 is 40018461.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 686697 + ... + 686720.

It is an arithmetic number, because the mean of its divisors is an integer number (3204642).

Almost surely, 2^16481004 is an apocalyptic number.

It is an amenable number.

16481004 is an abundant number, since it is smaller than the sum of its proper divisors (21974700).

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

16481004 is a wasteful number, since it uses less digits than its factorization.

16481004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1373424 (or 1373422 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 16481004 is about 4059.6802829780. The cubic root of 16481004 is about 254.4844331309.

Adding to 16481004 its reverse (40018461), we get a palindrome (56499465).

The spelling of 16481004 in words is "sixteen million, four hundred eighty-one thousand, four".