16481397 has 16 divisors (see below), whose sum is σ = 22482432. Its totient is φ = 10736880.

The previous prime is 16481383. The next prime is 16481401. The reversal of 16481397 is 79318461.

It is not a de Polignac number, because 16481397 - 2⁸ = 16481141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16481327) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 33322 + ... + 33812.

It is an arithmetic number, because the mean of its divisors is an integer number (1405152).

Almost surely, 2^16481397 is an apocalyptic number.

It is an amenable number.

16481397 is a deficient number, since it is larger than the sum of its proper divisors (6001035).

16481397 is a wasteful number, since it uses less digits than its factorization.

16481397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728.

The product of its digits is 36288, while the sum is 39.

The square root of 16481397 is about 4059.7286855158. The cubic root of 16481397 is about 254.4864558957.

The spelling of 16481397 in words is "sixteen million, four hundred eighty-one thousand, three hundred ninety-seven".