4321872 has 30 divisors (see below), whose sum is σ = 12095642. Its totient is φ = 1440576.

The previous prime is 4321871. The next prime is 4321883. The reversal of 4321872 is 2781234.

It can be written as a sum of positive squares in only one way, i.e., 2178576 + 2143296 = 1476^2 + 1464^2 .

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4321871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14863 + ... + 15150.

Almost surely, 2^4321872 is an apocalyptic number.

It is an amenable number.

4321872 is an abundant number, since it is smaller than the sum of its proper divisors (7773770).

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

4321872 is a wasteful number, since it uses less digits than its factorization.

4321872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30027 (or 30018 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 4321872 is about 2078.9112535171. The cubic root of 4321872 is about 162.8885785511. Note that the first 3 decimals are identical.

It can be divided in two parts, 43218 and 72, that multiplied together give a 4-th power (3111696 = 42⁴).

The spelling of 4321872 in words is "four million, three hundred twenty-one thousand, eight hundred seventy-two".