16223247 has 20 divisors (see below), whose sum is σ = 24698520. Its totient is φ = 10608624.

The previous prime is 16223239. The next prime is 16223293. The reversal of 16223247 is 74232261.

16223247 is a `hidden beast` number, since 1 + 622 + 32 + 4 + 7 = 666.

It is not a de Polignac number, because 16223247 - 2³ = 16223239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 16223247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16223747) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2404 + ... + 6182.

It is an arithmetic number, because the mean of its divisors is an integer number (1234926).

Almost surely, 2^16223247 is an apocalyptic number.

16223247 is a deficient number, since it is larger than the sum of its proper divisors (8475273).

16223247 is an equidigital number, since it uses as much as digits as its factorization.

16223247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3844 (or 3835 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 16223247 is about 4027.8092060077. The cubic root of 16223247 is about 253.1507743302.

It can be divided in two parts, 162 and 23247, that added together give a square (23409 = 153²).

The spelling of 16223247 in words is "sixteen million, two hundred twenty-three thousand, two hundred forty-seven".