2828421 has 12 divisors (see below), whose sum is σ = 4118400. Its totient is φ = 1870440.

The previous prime is 2828389. The next prime is 2828429. The reversal of 2828421 is 1248282.

It is not a de Polignac number, because 2828421 - 2⁵ = 2828389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2828429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21 + ... + 2378.

It is an arithmetic number, because the mean of its divisors is an integer number (343200).

2^2828421 is an apocalyptic number.

It is an amenable number.

2828421 is a deficient number, since it is larger than the sum of its proper divisors (1289979).

2828421 is a wasteful number, since it uses less digits than its factorization.

2828421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2536 (or 2533 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 2828421 is about 1681.7910096085. The cubic root of 2828421 is about 141.4212541581.

It can be divided in two parts, 2828 and 421, that added together give a square (3249 = 57²).

The spelling of 2828421 in words is "two million, eight hundred twenty-eight thousand, four hundred twenty-one".