2180826 has 12 divisors (see below), whose sum is σ = 4725162. Its totient is φ = 726936.

The previous prime is 2180813. The next prime is 2180833. The reversal of 2180826 is 6280812.

It can be written as a sum of positive squares in only one way, i.e., 2099601 + 81225 = 1449^2 + 285^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2180826.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 60561 + ... + 60596.

2^2180826 is an apocalyptic number.

2180826 is an abundant number, since it is smaller than the sum of its proper divisors (2544336).

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

2180826 is a wasteful number, since it uses less digits than its factorization.

2180826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121165 (or 121162 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 2180826 is about 1476.7619984276. The cubic root of 2180826 is about 129.6802001310.

The spelling of 2180826 in words is "two million, one hundred eighty thousand, eight hundred twenty-six".