26248989 has 16 divisors (see below), whose sum is σ = 37800000. Its totient is φ = 16106496.

The previous prime is 26248967. The next prime is 26248993. The reversal of 26248989 is 98984262.

It is a de Polignac number, because none of the positive numbers 2^k-26248989 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26248949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16762 + ... + 18260.

It is an arithmetic number, because the mean of its divisors is an integer number (2362500).

Almost surely, 2^26248989 is an apocalyptic number.

It is an amenable number.

26248989 is a deficient number, since it is larger than the sum of its proper divisors (11551011).

26248989 is a wasteful number, since it uses less digits than its factorization.

26248989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1964.

The product of its digits is 497664, while the sum is 48.

The square root of 26248989 is about 5123.3767185324. The cubic root of 26248989 is about 297.1922821574.

The spelling of 26248989 in words is "twenty-six million, two hundred forty-eight thousand, nine hundred eighty-nine".