26117620 has 12 divisors (see below), whose sum is σ = 54847044. Its totient is φ = 10447040.

The previous prime is 26117591. The next prime is 26117629. The reversal of 26117620 is 2671162.

It can be written as a sum of positive squares in 2 ways, for example, as 13571856 + 12545764 = 3684^2 + 3542^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26117629) 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, 652921 + ... + 652960.

It is an arithmetic number, because the mean of its divisors is an integer number (4570587).

Almost surely, 2^26117620 is an apocalyptic number.

26117620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26117620 is an abundant number, since it is smaller than the sum of its proper divisors (28729424).

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

26117620 is a wasteful number, since it uses less digits than its factorization.

26117620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1305890 (or 1305888 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 26117620 is about 5110.5400888751. The cubic root of 26117620 is about 296.6956640988.

Adding to 26117620 its reverse (2671162), we get a palindrome (28788782).

The spelling of 26117620 in words is "twenty-six million, one hundred seventeen thousand, six hundred twenty".