26271620 has 24 divisors (see below), whose sum is σ = 55339200. Its totient is φ = 10476512.

The previous prime is 26271617. The next prime is 26271629. The reversal of 26271620 is 2617262.

It is a self number, because there is not a number n which added to its sum of digits gives 26271620.

It is not an unprimeable number, because it can be changed into a prime (26271629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5351 + ... + 9009.

It is an arithmetic number, because the mean of its divisors is an integer number (2305800).

Almost surely, 2^26271620 is an apocalyptic number.

26271620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26271620 is an abundant number, since it is smaller than the sum of its proper divisors (29067580).

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

26271620 is a wasteful number, since it uses less digits than its factorization.

26271620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4027 (or 4025 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 26271620 is about 5125.5848446787. The cubic root of 26271620 is about 297.2776673704.

Adding to 26271620 its reverse (2617262), we get a palindrome (28888882).

The spelling of 26271620 in words is "twenty-six million, two hundred seventy-one thousand, six hundred twenty".