2187826 has 16 divisors (see below), whose sum is σ = 3392640. Its totient is φ = 1057680.

The previous prime is 2187817. The next prime is 2187827. The reversal of 2187826 is 6287812.

It is a junction number, because it is equal to n+sod(n) for n = 2187791 and 2187800.

It is not an unprimeable number, because it can be changed into a prime (2187827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9525 + ... + 9751.

It is an arithmetic number, because the mean of its divisors is an integer number (212040).

2^2187826 is an apocalyptic number.

2187826 is a deficient number, since it is larger than the sum of its proper divisors (1204814).

2187826 is a wasteful number, since it uses less digits than its factorization.

2187826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369.

The product of its digits is 10752, while the sum is 34.

The square root of 2187826 is about 1479.1301497840. The cubic root of 2187826 is about 129.8188008091.

It can be divided in two parts, 21878 and 26, that added together give a square (21904 = 148²).

The spelling of 2187826 in words is "two million, one hundred eighty-seven thousand, eight hundred twenty-six".