2294821 has 4 divisors (see below), whose sum is σ = 2317644. Its totient is φ = 2272000.

The previous prime is 2294819. The next prime is 2294827. The reversal of 2294821 is 1284922.

2294821 = T₃₈ + T₃₉ + ... + T₂₃₉.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1677025 + 617796 = 1295^2 + 786^2 .

It is a cyclic number.

It is not a de Polignac number, because 2294821 - 2¹ = 2294819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2294821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2294827) by changing a digit.

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, 11260 + ... + 11461.

It is an arithmetic number, because the mean of its divisors is an integer number (579411).

2^2294821 is an apocalyptic number.

It is an amenable number.

2294821 is a deficient number, since it is larger than the sum of its proper divisors (22823).

2294821 is a wasteful number, since it uses less digits than its factorization.

2294821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22822.

The product of its digits is 2304, while the sum is 28.

The square root of 2294821 is about 1514.8666607989. The cubic root of 2294821 is about 131.9014607400.

It can be divided in two parts, 229 and 4821, that added together give a triangular number (5050 = T₁₀₀).

The spelling of 2294821 in words is "two million, two hundred ninety-four thousand, eight hundred twenty-one".