16223641 has 8 divisors (see below), whose sum is σ = 18575744. Its totient is φ = 13880160.

The previous prime is 16223629. The next prime is 16223651. The reversal of 16223641 is 14632261.

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

It is not a de Polignac number, because 16223641 - 2⁵ = 16223609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16223611) 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, 2581 + ... + 6253.

It is an arithmetic number, because the mean of its divisors is an integer number (2321968).

Almost surely, 2^16223641 is an apocalyptic number.

It is an amenable number.

16223641 is a deficient number, since it is larger than the sum of its proper divisors (2352103).

16223641 is an equidigital number, since it uses as much as digits as its factorization.

16223641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4311.

The product of its digits is 1728, while the sum is 25.

The square root of 16223641 is about 4027.8581156739. The cubic root of 16223641 is about 253.1528236651.

The spelling of 16223641 in words is "sixteen million, two hundred twenty-three thousand, six hundred forty-one".