16672224 has 24 divisors (see below), whose sum is σ = 43764840. Its totient is φ = 5557376.

The previous prime is 16672207. The next prime is 16672231. The reversal of 16672224 is 42227661.

It is a tau number, because it is divible by the number of its divisors (24).

It is a junction number, because it is equal to n+sod(n) for n = 16672191 and 16672200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86739 + ... + 86930.

It is an arithmetic number, because the mean of its divisors is an integer number (1823535).

Almost surely, 2^16672224 is an apocalyptic number.

It is an amenable number.

16672224 is an abundant number, since it is smaller than the sum of its proper divisors (27092616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16672224 is a wasteful number, since it uses less digits than its factorization.

16672224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173682 (or 173674 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 16672224 is about 4083.1634794605. The cubic root of 16672224 is about 255.4648652226.

Adding to 16672224 its reverse (42227661), we get a palindrome (58899885).

It can be divided in two parts, 166 and 72224, that added together give a triangular number (72390 = T₃₈₀).

The spelling of 16672224 in words is "sixteen million, six hundred seventy-two thousand, two hundred twenty-four".