26342778 has 64 divisors (see below), whose sum is σ = 69166080. Its totient is φ = 6480000.

The previous prime is 26342773. The next prime is 26342801. The reversal of 26342778 is 87724362.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26342773) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7278 + ... + 10278.

It is an arithmetic number, because the mean of its divisors is an integer number (1080720).

Almost surely, 2^26342778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26342778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34583040).

26342778 is an abundant number, since it is smaller than the sum of its proper divisors (42823302).

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

26342778 is a wasteful number, since it uses less digits than its factorization.

26342778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3043.

The product of its digits is 112896, while the sum is 39.

The square root of 26342778 is about 5132.5216024874. The cubic root of 26342778 is about 297.5458225678.

The spelling of 26342778 in words is "twenty-six million, three hundred forty-two thousand, seven hundred seventy-eight".