26015860 has 72 divisors (see below), whose sum is σ = 60873120. Its totient is φ = 9330048.

The previous prime is 26015839. The next prime is 26015861. The reversal of 26015860 is 6851062.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26015861) 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 23 ways as a sum of consecutive naturals, for example, 145251 + ... + 145429.

It is an arithmetic number, because the mean of its divisors is an integer number (845460).

Almost surely, 2^26015860 is an apocalyptic number.

26015860 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 26015860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30436560).

26015860 is an abundant number, since it is smaller than the sum of its proper divisors (34857260).

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

26015860 is a wasteful number, since it uses less digits than its factorization.

26015860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257 (or 242 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 26015860 is about 5100.5744774486. The cubic root of 26015860 is about 296.3098320167.

It can be divided in two parts, 26015 and 860, that multiplied together give a square (22372900 = 4730²).

The spelling of 26015860 in words is "twenty-six million, fifteen thousand, eight hundred sixty".