26872565 has 16 divisors (see below), whose sum is σ = 32901120. Its totient is φ = 21067200.

The previous prime is 26872523. The next prime is 26872607. The reversal of 26872565 is 56527862.

It is an interprime number because it is at equal distance from previous prime (26872523) and next prime (26872607).

It is not a de Polignac number, because 26872565 - 2⁶ = 26872501 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63926 + ... + 64344.

It is an arithmetic number, because the mean of its divisors is an integer number (2056320).

Almost surely, 2^26872565 is an apocalyptic number.

It is an amenable number.

26872565 is a deficient number, since it is larger than the sum of its proper divisors (6028555).

26872565 is a wasteful number, since it uses less digits than its factorization.

26872565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 652.

The product of its digits is 201600, while the sum is 41.

The square root of 26872565 is about 5183.8754807576. The cubic root of 26872565 is about 299.5272740102.

The spelling of 26872565 in words is "twenty-six million, eight hundred seventy-two thousand, five hundred sixty-five".