2838621 has 4 divisors (see below), whose sum is σ = 3784832. Its totient is φ = 1892412.

The previous prime is 2838617. The next prime is 2838629. The reversal of 2838621 is 1268382.

2838621 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2838621 - 2² = 2838617 is a prime.

It is a D-number.

It is a Duffinian number.

2838621 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2838629) 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, 473101 + ... + 473106.

It is an arithmetic number, because the mean of its divisors is an integer number (946208).

2^2838621 is an apocalyptic number.

It is an amenable number.

2838621 is a deficient number, since it is larger than the sum of its proper divisors (946211).

2838621 is an equidigital number, since it uses as much as digits as its factorization.

2838621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946210.

The product of its digits is 4608, while the sum is 30.

The square root of 2838621 is about 1684.8207619803. The cubic root of 2838621 is about 141.5910504574.

The spelling of 2838621 in words is "two million, eight hundred thirty-eight thousand, six hundred twenty-one".