26989895 has 4 divisors (see below), whose sum is σ = 32387880. Its totient is φ = 21591912.

The previous prime is 26989843. The next prime is 26989943. The reversal of 26989895 is 59898962.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26989895 - 2¹⁸ = 26727751 is a prime.

It is a super-2 number, since 2×26989895² = 1456908864222050, 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 26989895.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2698985 + ... + 2698994.

It is an arithmetic number, because the mean of its divisors is an integer number (8096970).

Almost surely, 2^26989895 is an apocalyptic number.

26989895 is a deficient number, since it is larger than the sum of its proper divisors (5397985).

26989895 is an equidigital number, since it uses as much as digits as its factorization.

26989895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5397984.

The product of its digits is 2799360, while the sum is 56.

The square root of 26989895 is about 5195.1799776331. The cubic root of 26989895 is about 299.9625694041.

The spelling of 26989895 in words is "twenty-six million, nine hundred eighty-nine thousand, eight hundred ninety-five".