26671878 has 48 divisors (see below), whose sum is σ = 61865856. Its totient is φ = 8275200.

The previous prime is 26671849. The next prime is 26671903. The reversal of 26671878 is 87817662.

It is a super-2 number, since 2×26671878² = 1422778152093768, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30475 + ... + 31337.

It is an arithmetic number, because the mean of its divisors is an integer number (1288872).

Almost surely, 2^26671878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26671878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30932928).

26671878 is an abundant number, since it is smaller than the sum of its proper divisors (35193978).

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

26671878 is a wasteful number, since it uses less digits than its factorization.

26671878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989 (or 986 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 26671878 is about 5164.4823554738. The cubic root of 26671878 is about 298.7797769145.

The spelling of 26671878 in words is "twenty-six million, six hundred seventy-one thousand, eight hundred seventy-eight".