16243481 has 8 divisors (see below), whose sum is σ = 16737024. Its totient is φ = 15752880.

The previous prime is 16243471. The next prime is 16243531. The reversal of 16243481 is 18434261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16243481 is a prime.

It is a super-2 number, since 2×16243481² = 527701349994722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16243441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15896 + ... + 16886.

It is an arithmetic number, because the mean of its divisors is an integer number (2092128).

Almost surely, 2^16243481 is an apocalyptic number.

It is an amenable number.

16243481 is a deficient number, since it is larger than the sum of its proper divisors (493543).

16243481 is an equidigital number, since it uses as much as digits as its factorization.

16243481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1471.

The product of its digits is 4608, while the sum is 29.

The square root of 16243481 is about 4030.3202106036. The cubic root of 16243481 is about 253.2559757265.

The spelling of 16243481 in words is "sixteen million, two hundred forty-three thousand, four hundred eighty-one".