16481647 has 16 divisors (see below), whose sum is σ = 20446720. Its totient is φ = 12936672.

The previous prime is 16481627. The next prime is 16481681. The reversal of 16481647 is 74618461.

It is a happy number.

It is not a de Polignac number, because 16481647 - 2⁷ = 16481519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16481617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11998 + ... + 13300.

It is an arithmetic number, because the mean of its divisors is an integer number (1277920).

Almost surely, 2^16481647 is an apocalyptic number.

16481647 is a deficient number, since it is larger than the sum of its proper divisors (3965073).

16481647 is a wasteful number, since it uses less digits than its factorization.

16481647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1462.

The product of its digits is 32256, while the sum is 37.

The square root of 16481647 is about 4059.7594756340. The cubic root of 16481647 is about 254.4877426251.

The spelling of 16481647 in words is "sixteen million, four hundred eighty-one thousand, six hundred forty-seven".