26091020 has 12 divisors (see below), whose sum is σ = 54791184. Its totient is φ = 10436400.

The previous prime is 26091017. The next prime is 26091041. The reversal of 26091020 is 2019062.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 1304551 = 26091020 / (2 + 6 + 0 + 9 + 1 + 0 + 2 + 0).

It is a zygodrome in base 2.

It is a junction number, because it is equal to n+sod(n) for n = 26090983 and 26091001.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652256 + ... + 652295.

It is an arithmetic number, because the mean of its divisors is an integer number (4565932).

Almost surely, 2^26091020 is an apocalyptic number.

26091020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26091020 is an abundant number, since it is smaller than the sum of its proper divisors (28700164).

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

26091020 is a wasteful number, since it uses less digits than its factorization.

26091020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1304560 (or 1304558 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 26091020 is about 5107.9369612398. The cubic root of 26091020 is about 296.5949047203.

The spelling of 26091020 in words is "twenty-six million, ninety-one thousand, twenty".