2805428 has 6 divisors (see below), whose sum is σ = 4909506. Its totient is φ = 1402712.

The previous prime is 2805403. The next prime is 2805443. The reversal of 2805428 is 8245082.

It can be written as a sum of positive squares in only one way, i.e., 2184484 + 620944 = 1478^2 + 788^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2805428.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 350675 + ... + 350682.

It is an arithmetic number, because the mean of its divisors is an integer number (818251).

2^2805428 is an apocalyptic number.

It is an amenable number.

2805428 is a deficient number, since it is larger than the sum of its proper divisors (2104078).

2805428 is a wasteful number, since it uses less digits than its factorization.

2805428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701361 (or 701359 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 2805428 is about 1674.9411929975. The cubic root of 2805428 is about 141.0369937974.

It can be divided in two parts, 28054 and 28, that added together give a palindrome (28082).

The spelling of 2805428 in words is "two million, eight hundred five thousand, four hundred twenty-eight".