16223471 has 4 divisors (see below), whose sum is σ = 17698344. Its totient is φ = 14748600.

The previous prime is 16223461. The next prime is 16223479. The reversal of 16223471 is 17432261.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16223471 - 2²² = 12029167 is a prime.

It is a super-3 number, since 3×16223471³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16223471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16223479) 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 3 ways as a sum of consecutive naturals, for example, 737420 + ... + 737441.

It is an arithmetic number, because the mean of its divisors is an integer number (4424586).

Almost surely, 2^16223471 is an apocalyptic number.

16223471 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

16223471 is a deficient number, since it is larger than the sum of its proper divisors (1474873).

16223471 is a wasteful number, since it uses less digits than its factorization.

16223471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474872.

The product of its digits is 2016, while the sum is 26.

The square root of 16223471 is about 4027.8370125912. The cubic root of 16223471 is about 253.1519394383.

The spelling of 16223471 in words is "sixteen million, two hundred twenty-three thousand, four hundred seventy-one".