2187266 has 4 divisors (see below), whose sum is σ = 3280902. Its totient is φ = 1093632.

The previous prime is 2187259. The next prime is 2187287. The reversal of 2187266 is 6627812.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1745041 + 442225 = 1321^2 + 665^2 .

It is a d-powerful number, because it can be written as 2¹⁵ + 1 + 8³ + 7⁴ + 2²¹ + 6⁵ + 6⁶ .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 546815 + ... + 546818.

2^2187266 is an apocalyptic number.

2187266 is a deficient number, since it is larger than the sum of its proper divisors (1093636).

2187266 is a wasteful number, since it uses less digits than its factorization.

2187266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093635.

The product of its digits is 8064, while the sum is 32.

The square root of 2187266 is about 1478.9408372210. The cubic root of 2187266 is about 129.8077236436.

The spelling of 2187266 in words is "two million, one hundred eighty-seven thousand, two hundred sixty-six".