2578804 has 6 divisors (see below), whose sum is σ = 4512914. Its totient is φ = 1289400.

The previous prime is 2578801. The next prime is 2578817. The reversal of 2578804 is 4088752.

It can be written as a sum of positive squares in only one way, i.e., 1695204 + 883600 = 1302^2 + 940^2 .

It is a nialpdrome in base 12.

It is a self number, because there is not a number n which added to its sum of digits gives 2578804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2578801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322347 + ... + 322354.

2^2578804 is an apocalyptic number.

It is an amenable number.

2578804 is a deficient number, since it is larger than the sum of its proper divisors (1934110).

2578804 is a wasteful number, since it uses less digits than its factorization.

2578804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644705 (or 644703 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 2578804 is about 1605.8654987265. The cubic root of 2578804 is about 137.1322005195.

The spelling of 2578804 in words is "two million, five hundred seventy-eight thousand, eight hundred four".