2821427 has 4 divisors (see below), whose sum is σ = 3224496. Its totient is φ = 2418360.

The previous prime is 2821421. The next prime is 2821451. The reversal of 2821427 is 7241282.

2821427 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7241282 = 2 ⋅3620641.

It is not a de Polignac number, because 2821427 - 2⁴ = 2821411 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2821396 and 2821405.

It is not an unprimeable number, because it can be changed into a prime (2821421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201524 + ... + 201537.

It is an arithmetic number, because the mean of its divisors is an integer number (806124).

2^2821427 is an apocalyptic number.

2821427 is a deficient number, since it is larger than the sum of its proper divisors (403069).

2821427 is an equidigital number, since it uses as much as digits as its factorization.

2821427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403068.

The product of its digits is 1792, while the sum is 26.

The square root of 2821427 is about 1679.7103917045. The cubic root of 2821427 is about 141.3045911105.

The spelling of 2821427 in words is "two million, eight hundred twenty-one thousand, four hundred twenty-seven".