26071220 has 48 divisors (see below), whose sum is σ = 63452928. Its totient is φ = 8812800.

The previous prime is 26071163. The next prime is 26071223. The reversal of 26071220 is 2217062.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 26071192 and 26071201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26071223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8945 + ... + 11495.

It is an arithmetic number, because the mean of its divisors is an integer number (1321936).

Almost surely, 2^26071220 is an apocalyptic number.

26071220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26071220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31726464).

26071220 is an abundant number, since it is smaller than the sum of its proper divisors (37381708).

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

26071220 is a wasteful number, since it uses less digits than its factorization.

26071220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2640 (or 2638 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 26071220 is about 5105.9984332156. The cubic root of 26071220 is about 296.5198589093.

Adding to 26071220 its reverse (2217062), we get a palindrome (28288282).

The spelling of 26071220 in words is "twenty-six million, seventy-one thousand, two hundred twenty".