26581842 has 24 divisors (see below), whose sum is σ = 65822016. Its totient is φ = 7594776.

The previous prime is 26581831. The next prime is 26581843. The reversal of 26581842 is 24818562.

It is a super-2 number, since 2×26581842² = 1413188648225928, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26581797 and 26581806.

It is not an unprimeable number, because it can be changed into a prime (26581843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105358 + ... + 105609.

It is an arithmetic number, because the mean of its divisors is an integer number (2742584).

Almost surely, 2^26581842 is an apocalyptic number.

26581842 is an abundant number, since it is smaller than the sum of its proper divisors (39240174).

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

26581842 is a wasteful number, since it uses less digits than its factorization.

26581842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210982 (or 210979 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 26581842 is about 5155.7581401769. The cubic root of 26581842 is about 298.4432019067.

The spelling of 26581842 in words is "twenty-six million, five hundred eighty-one thousand, eight hundred forty-two".