26031820 has 12 divisors (see below), whose sum is σ = 54666864. Its totient is φ = 10412720.

The previous prime is 26031809. The next prime is 26031823. The reversal of 26031820 is 2813062.

It is a junction number, because it is equal to n+sod(n) for n = 26031791 and 26031800.

It is not an unprimeable number, because it can be changed into a prime (26031823) 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 3 ways as a sum of consecutive naturals, for example, 650776 + ... + 650815.

It is an arithmetic number, because the mean of its divisors is an integer number (4555572).

Almost surely, 2^26031820 is an apocalyptic number.

26031820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26031820 is an abundant number, since it is smaller than the sum of its proper divisors (28635044).

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

26031820 is a wasteful number, since it uses less digits than its factorization.

26031820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1301600 (or 1301598 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 26031820 is about 5102.1387672230. The cubic root of 26031820 is about 296.3704122190.

Adding to 26031820 its reverse (2813062), we get a palindrome (28844882).

The spelling of 26031820 in words is "twenty-six million, thirty-one thousand, eight hundred twenty".