26286865 has 16 divisors (see below), whose sum is σ = 35147520. Its totient is φ = 18709120.

The previous prime is 26286859. The next prime is 26286877. The reversal of 26286865 is 56868262.

It is not a de Polignac number, because 26286865 - 2⁵ = 26286833 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2500 + ... + 7669.

It is an arithmetic number, because the mean of its divisors is an integer number (2196720).

Almost surely, 2^26286865 is an apocalyptic number.

It is an amenable number.

26286865 is a deficient number, since it is larger than the sum of its proper divisors (8860655).

26286865 is a wasteful number, since it uses less digits than its factorization.

26286865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10232.

The product of its digits is 276480, while the sum is 43.

The square root of 26286865 is about 5127.0717763651. The cubic root of 26286865 is about 297.3351580734.

The spelling of 26286865 in words is "twenty-six million, two hundred eighty-six thousand, eight hundred sixty-five".