26878065 has 16 divisors (see below), whose sum is σ = 45268800. Its totient is φ = 13580352.

The previous prime is 26878063. The next prime is 26878069. The reversal of 26878065 is 56087862.

It is not a de Polignac number, because 26878065 - 2¹ = 26878063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26878063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46870 + ... + 47439.

It is an arithmetic number, because the mean of its divisors is an integer number (2829300).

Almost surely, 2^26878065 is an apocalyptic number.

It is an amenable number.

26878065 is a deficient number, since it is larger than the sum of its proper divisors (18390735).

26878065 is a wasteful number, since it uses less digits than its factorization.

26878065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94336.

The product of its (nonzero) digits is 161280, while the sum is 42.

The square root of 26878065 is about 5184.4059447539. The cubic root of 26878065 is about 299.5477073361.

The spelling of 26878065 in words is "twenty-six million, eight hundred seventy-eight thousand, sixty-five".