26728664 has 8 divisors (see below), whose sum is σ = 50116260. Its totient is φ = 13364328.

The previous prime is 26728643. The next prime is 26728699. The reversal of 26728664 is 46682762.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1670534 + ... + 1670549.

Almost surely, 2^26728664 is an apocalyptic number.

It is an amenable number.

26728664 is a deficient number, since it is larger than the sum of its proper divisors (23387596).

26728664 is a wasteful number, since it uses less digits than its factorization.

26728664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3341089 (or 3341085 counting only the distinct ones).

The product of its digits is 193536, while the sum is 41.

The square root of 26728664 is about 5169.9771759651. The cubic root of 26728664 is about 298.9916665276.

The spelling of 26728664 in words is "twenty-six million, seven hundred twenty-eight thousand, six hundred sixty-four".