26144987 has 4 divisors (see below), whose sum is σ = 28521816. Its totient is φ = 23768160.

The previous prime is 26144983. The next prime is 26145013. The reversal of 26144987 is 78944162.

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 26144987 - 2² = 26144983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26144983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1188398 + ... + 1188419.

It is an arithmetic number, because the mean of its divisors is an integer number (7130454).

Almost surely, 2^26144987 is an apocalyptic number.

26144987 is a deficient number, since it is larger than the sum of its proper divisors (2376829).

26144987 is a wasteful number, since it uses less digits than its factorization.

26144987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2376828.

The product of its digits is 96768, while the sum is 41.

The square root of 26144987 is about 5113.2168935026. The cubic root of 26144987 is about 296.7992574566.

The spelling of 26144987 in words is "twenty-six million, one hundred forty-four thousand, nine hundred eighty-seven".