26239878 has 24 divisors (see below), whose sum is σ = 64975248. Its totient is φ = 7497072.

The previous prime is 26239861. The next prime is 26239879. The reversal of 26239878 is 87893262.

It is a nialpdrome in base 9.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26239879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104001 + ... + 104252.

It is an arithmetic number, because the mean of its divisors is an integer number (2707302).

Almost surely, 2^26239878 is an apocalyptic number.

26239878 is an abundant number, since it is smaller than the sum of its proper divisors (38735370).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26239878 is a wasteful number, since it uses less digits than its factorization.

26239878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208268 (or 208265 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 26239878 is about 5122.4874816831. The cubic root of 26239878 is about 297.1578931221.

The spelling of 26239878 in words is "twenty-six million, two hundred thirty-nine thousand, eight hundred seventy-eight".