26992564 has 6 divisors (see below), whose sum is σ = 47236994. Its totient is φ = 13496280.

The previous prime is 26992531. The next prime is 26992571. The reversal of 26992564 is 46529962.

It can be written as a sum of positive squares in only one way, i.e., 20702500 + 6290064 = 4550^2 + 2508^2 .

It is a super-2 number, since 2×26992564² = 1457197022588192, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26992564.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3374067 + ... + 3374074.

Almost surely, 2^26992564 is an apocalyptic number.

It is an amenable number.

26992564 is a deficient number, since it is larger than the sum of its proper divisors (20244430).

26992564 is a wasteful number, since it uses less digits than its factorization.

26992564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6748145 (or 6748143 counting only the distinct ones).

The product of its digits is 233280, while the sum is 43.

The square root of 26992564 is about 5195.4368440007. The cubic root of 26992564 is about 299.9724567306.

It can be divided in two parts, 26992 and 564, that added together give a square (27556 = 166²).

The spelling of 26992564 in words is "twenty-six million, nine hundred ninety-two thousand, five hundred sixty-four".