26005620 has 48 divisors (see below), whose sum is σ = 73075968. Its totient is φ = 6910080.

The previous prime is 26005619. The next prime is 26005627. The reversal of 26005620 is 2650062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26005627) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 21430 + ... + 22610.

It is an arithmetic number, because the mean of its divisors is an integer number (1522416).

Almost surely, 2^26005620 is an apocalyptic number.

26005620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26005620 is an abundant number, since it is smaller than the sum of its proper divisors (47070348).

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

26005620 is a wasteful number, since it uses less digits than its factorization.

26005620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1560 (or 1558 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 26005620 is about 5099.5705701559. The cubic root of 26005620 is about 296.2709504670.

Adding to 26005620 its reverse (2650062), we get a palindrome (28655682).

The spelling of 26005620 in words is "twenty-six million, five thousand, six hundred twenty".