26221804 has 12 divisors (see below), whose sum is σ = 52443664. Its totient is φ = 11237904.

The previous prime is 26221801. The next prime is 26221807. The reversal of 26221804 is 40812262.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (26221801) and next prime (26221807).

26221804 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (26221801) 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 3 ways as a sum of consecutive naturals, for example, 468219 + ... + 468274.

Almost surely, 2^26221804 is an apocalyptic number.

It is an amenable number.

26221804 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

26221804 is a wasteful number, since it uses less digits than its factorization.

26221804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936504 (or 936502 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 25.

The square root of 26221804 is about 5120.7229958278. The cubic root of 26221804 is about 297.0896501044.

The spelling of 26221804 in words is "twenty-six million, two hundred twenty-one thousand, eight hundred four".