26790644 has 6 divisors (see below), whose sum is σ = 46883634. Its totient is φ = 13395320.

The previous prime is 26790629. The next prime is 26790649. The reversal of 26790644 is 44609762.

It can be written as a sum of positive squares in only one way, i.e., 26646244 + 144400 = 5162^2 + 380^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26790598 and 26790607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26790649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3348827 + ... + 3348834.

It is an arithmetic number, because the mean of its divisors is an integer number (7813939).

Almost surely, 2^26790644 is an apocalyptic number.

It is an amenable number.

26790644 is a deficient number, since it is larger than the sum of its proper divisors (20092990).

26790644 is a wasteful number, since it uses less digits than its factorization.

26790644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6697665 (or 6697663 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 26790644 is about 5175.9679288033. The cubic root of 26790644 is about 299.2225946171. Note that the first 3 decimals are identical.

The spelling of 26790644 in words is "twenty-six million, seven hundred ninety thousand, six hundred forty-four".