2380821 has 4 divisors (see below), whose sum is σ = 3174432. Its totient is φ = 1587212.

The previous prime is 2380811. The next prime is 2380837. The reversal of 2380821 is 1280832.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2380821 - 2¹¹ = 2378773 is a prime.

It is a D-number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2380791 and 2380800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2380801) 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, 396801 + ... + 396806.

It is an arithmetic number, because the mean of its divisors is an integer number (793608).

2^2380821 is an apocalyptic number.

It is an amenable number.

2380821 is a deficient number, since it is larger than the sum of its proper divisors (793611).

2380821 is an equidigital number, since it uses as much as digits as its factorization.

2380821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 793610.

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 2380821 is about 1542.9909267394. The cubic root of 2380821 is about 133.5289953712.

The spelling of 2380821 in words is "two million, three hundred eighty thousand, eight hundred twenty-one".