2187472 has 20 divisors (see below), whose sum is σ = 4843936. Its totient is φ = 937440.

The previous prime is 2187463. The next prime is 2187491. The reversal of 2187472 is 2747812.

It is a nude number because it is divisible by every one of its digits.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9654 + ... + 9877.

2^2187472 is an apocalyptic number.

It is an amenable number.

2187472 is an abundant number, since it is smaller than the sum of its proper divisors (2656464).

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

2187472 is a wasteful number, since it uses less digits than its factorization.

2187472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19546 (or 19540 counting only the distinct ones).

The product of its digits is 6272, while the sum is 31.

The square root of 2187472 is about 1479.0104800170. The cubic root of 2187472 is about 129.8117986779.

Subtracting from 2187472 its sum of digits (31), we obtain a square (2187441 = 1479²).

The spelling of 2187472 in words is "two million, one hundred eighty-seven thousand, four hundred seventy-two".