3187872 has 36 divisors (see below), whose sum is σ = 9066330. Its totient is φ = 1062528.

The previous prime is 3187859. The next prime is 3187879. The reversal of 3187872 is 2787813.

It can be written as a sum of positive squares in only one way, i.e., 3111696 + 76176 = 1764^2 + 276^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (3187879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5247 + ... + 5822.

Almost surely, 2^3187872 is an apocalyptic number.

3187872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

3187872 is an abundant number, since it is smaller than the sum of its proper divisors (5878458).

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

3187872 is a wasteful number, since it uses less digits than its factorization.

3187872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11085 (or 11074 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 3187872 is about 1785.4612849345. The cubic root of 3187872 is about 147.1748578672.

The spelling of 3187872 in words is "three million, one hundred eighty-seven thousand, eight hundred seventy-two".