26989568 has 22 divisors (see below), whose sum is σ = 53954826. Its totient is φ = 13494272.

The previous prime is 26989559. The next prime is 26989579. The reversal of 26989568 is 86598962.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21827584 + 5161984 = 4672^2 + 2272^2 .

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, 12155 + ... + 14202.

Almost surely, 2^26989568 is an apocalyptic number.

It is an amenable number.

26989568 is a deficient number, since it is larger than the sum of its proper divisors (26965258).

26989568 is an equidigital number, since it uses as much as digits as its factorization.

26989568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26377 (or 26359 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 53.

The square root of 26989568 is about 5195.1485060583. The cubic root of 26989568 is about 299.9613579858.

The spelling of 26989568 in words is "twenty-six million, nine hundred eighty-nine thousand, five hundred sixty-eight".