26202640 has 40 divisors (see below), whose sum is σ = 61424640. Its totient is φ = 10394496.

The previous prime is 26202629. The next prime is 26202647. The reversal of 26202640 is 4620262.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (26202647) 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 7 ways as a sum of consecutive naturals, for example, 8871 + ... + 11449.

It is an arithmetic number, because the mean of its divisors is an integer number (1535616).

Almost surely, 2^26202640 is an apocalyptic number.

26202640 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 26202640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30712320).

26202640 is an abundant number, since it is smaller than the sum of its proper divisors (35222000).

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

26202640 is a wasteful number, since it uses less digits than its factorization.

26202640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719 (or 2713 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 26202640 is about 5118.8514336714. The cubic root of 26202640 is about 297.0172572513.

The spelling of 26202640 in words is "twenty-six million, two hundred two thousand, six hundred forty".