2804436 has 48 divisors (see below), whose sum is σ = 7593600. Its totient is φ = 893376.

The previous prime is 2804411. The next prime is 2804437. The reversal of 2804436 is 6344082.

2804436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2804436² = 15729722556192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2804437) 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 15 ways as a sum of consecutive naturals, for example, 1920 + ... + 3048.

It is an arithmetic number, because the mean of its divisors is an integer number (158200).

2^2804436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2804436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3796800).

2804436 is an abundant number, since it is smaller than the sum of its proper divisors (4789164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2804436 is a wasteful number, since it uses less digits than its factorization.

2804436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165 (or 1157 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 2804436 is about 1674.6450370153. The cubic root of 2804436 is about 141.0203682662.

It can be divided in two parts, 2804 and 436, that added together give a triangular number (3240 = T₈₀).

The spelling of 2804436 in words is "two million, eight hundred four thousand, four hundred thirty-six".