26289078 has 8 divisors (see below), whose sum is σ = 52578168. Its totient is φ = 8763024.

The previous prime is 26289073. The next prime is 26289079. The reversal of 26289078 is 87098262.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

26289078 is an admirable number.

It is a super-2 number, since 2×26289078² = 1382231244180168, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26289073) 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, 2190751 + ... + 2190762.

It is an arithmetic number, because the mean of its divisors is an integer number (6572271).

Almost surely, 2^26289078 is an apocalyptic number.

26289078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

26289078 is a wasteful number, since it uses less digits than its factorization.

26289078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4381518.

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 26289078 is about 5127.2875870191. The cubic root of 26289078 is about 297.3435017112.

The spelling of 26289078 in words is "twenty-six million, two hundred eighty-nine thousand, seventy-eight".