1672224 has 24 divisors (see below), whose sum is σ = 4389840. Its totient is φ = 557376.

The previous prime is 1672219. The next prime is 1672243. The reversal of 1672224 is 4222761.

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

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 1672194 and 1672203.

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, 8614 + ... + 8805.

It is an arithmetic number, because the mean of its divisors is an integer number (182910).

2^1672224 is an apocalyptic number.

It is an amenable number.

1672224 is an abundant number, since it is smaller than the sum of its proper divisors (2717616).

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

1672224 is a wasteful number, since it uses less digits than its factorization.

1672224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17432 (or 17424 counting only the distinct ones).

The product of its digits is 1344, while the sum is 24.

The square root of 1672224 is about 1293.1450034702. The cubic root of 1672224 is about 118.6947428973.

Adding to 1672224 its reverse (4222761), we get a palindrome (5894985).

The spelling of 1672224 in words is "one million, six hundred seventy-two thousand, two hundred twenty-four".