16448691 has 16 divisors (see below), whose sum is σ = 25369344. Its totient is φ = 9285024.

The previous prime is 16448671. The next prime is 16448717. The reversal of 16448691 is 19684461.

It is not a de Polignac number, because 16448691 - 2¹⁰ = 16447667 is a prime.

It is a super-2 number, since 2×16448691² = 541118871226962, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16448651) 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, 2976 + ... + 6461.

It is an arithmetic number, because the mean of its divisors is an integer number (1585584).

Almost surely, 2^16448691 is an apocalyptic number.

16448691 is a deficient number, since it is larger than the sum of its proper divisors (8920653).

16448691 is an equidigital number, since it uses as much as digits as its factorization.

16448691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9530.

The product of its digits is 41472, while the sum is 39.

The square root of 16448691 is about 4055.6985834749. The cubic root of 16448691 is about 254.3180084901.

The spelling of 16448691 in words is "sixteen million, four hundred forty-eight thousand, six hundred ninety-one".