16221484 has 6 divisors (see below), whose sum is σ = 28387604. Its totient is φ = 8110740.

The previous prime is 16221467. The next prime is 16221487. The reversal of 16221484 is 48412261.

It is not an unprimeable number, because it can be changed into a prime (16221487) by changing a digit.

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 as a sum of consecutive naturals, namely, 2027682 + ... + 2027689.

Almost surely, 2^16221484 is an apocalyptic number.

It is an amenable number.

16221484 is a deficient number, since it is larger than the sum of its proper divisors (12166120).

16221484 is a wasteful number, since it uses less digits than its factorization.

16221484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4055375 (or 4055373 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 16221484 is about 4027.5903465968. The cubic root of 16221484 is about 253.1416039304.

The spelling of 16221484 in words is "sixteen million, two hundred twenty-one thousand, four hundred eighty-four".