2821766 has 8 divisors (see below), whose sum is σ = 4455480. Its totient is φ = 1336608.

The previous prime is 2821759. The next prime is 2821769. The reversal of 2821766 is 6671282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2821769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37091 + ... + 37166.

It is an arithmetic number, because the mean of its divisors is an integer number (556935).

2^2821766 is an apocalyptic number.

2821766 is a deficient number, since it is larger than the sum of its proper divisors (1633714).

2821766 is a wasteful number, since it uses less digits than its factorization.

2821766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74278.

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

The square root of 2821766 is about 1679.8112989262. The cubic root of 2821766 is about 141.3102502253.

It can be divided in two parts, 282 and 1766, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 2821766 in words is "two million, eight hundred twenty-one thousand, seven hundred sixty-six".