16481644 has 6 divisors (see below), whose sum is σ = 28842884. Its totient is φ = 8240820.

The previous prime is 16481627. The next prime is 16481681. The reversal of 16481644 is 44618461.

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 as a sum of consecutive naturals, namely, 2060202 + ... + 2060209.

Almost surely, 2^16481644 is an apocalyptic number.

It is an amenable number.

16481644 is a deficient number, since it is larger than the sum of its proper divisors (12361240).

16481644 is a wasteful number, since it uses less digits than its factorization.

16481644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4120415 (or 4120413 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 16481644 is about 4059.7591061540. The cubic root of 16481644 is about 254.4877271844.

The spelling of 16481644 in words is "sixteen million, four hundred eighty-one thousand, six hundred forty-four".