16326481 has 4 divisors (see below), whose sum is σ = 17036352. Its totient is φ = 15616612.

The previous prime is 16326473. The next prime is 16326551. The reversal of 16326481 is 18462361.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16326481 - 2³ = 16326473 is a prime.

It is a super-2 number, since 2×16326481² = 533107963686722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16326461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 354901 + ... + 354946.

It is an arithmetic number, because the mean of its divisors is an integer number (4259088).

Almost surely, 2^16326481 is an apocalyptic number.

It is an amenable number.

16326481 is a deficient number, since it is larger than the sum of its proper divisors (709871).

16326481 is an equidigital number, since it uses as much as digits as its factorization.

16326481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709870.

The product of its digits is 6912, while the sum is 31.

The square root of 16326481 is about 4040.6040390021. The cubic root of 16326481 is about 253.6866006768.

It can be divided in two parts, 16326 and 481, that added together give a 5-th power (16807 = 7⁵).

The spelling of 16326481 in words is "sixteen million, three hundred twenty-six thousand, four hundred eighty-one".