2126804 has 6 divisors (see below), whose sum is σ = 3721914. Its totient is φ = 1063400.

The previous prime is 2126801. The next prime is 2126809. The reversal of 2126804 is 4086212.

It can be written as a sum of positive squares in only one way, i.e., 1106704 + 1020100 = 1052^2 + 1010^2 .

It is a plaindrome in base 11.

It is a self number, because there is not a number n which added to its sum of digits gives 2126804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2126801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265847 + ... + 265854.

It is an arithmetic number, because the mean of its divisors is an integer number (620319).

2^2126804 is an apocalyptic number.

It is an amenable number.

2126804 is a deficient number, since it is larger than the sum of its proper divisors (1595110).

2126804 is a wasteful number, since it uses less digits than its factorization.

2126804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531705 (or 531703 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 2126804 is about 1458.3566093381. The cubic root of 2126804 is about 128.6004503563.

The spelling of 2126804 in words is "two million, one hundred twenty-six thousand, eight hundred four".