26386542 has 96 divisors (see below), whose sum is σ = 71547840. Its totient is φ = 6842880.

The previous prime is 26386537. The next prime is 26386561. The reversal of 26386542 is 24568362.

It is a junction number, because it is equal to n+sod(n) for n = 26386497 and 26386506.

It is a congruent number.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 145692 + ... + 145872.

It is an arithmetic number, because the mean of its divisors is an integer number (745290).

Almost surely, 2^26386542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26386542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35773920).

26386542 is an abundant number, since it is smaller than the sum of its proper divisors (45161298).

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

26386542 is a wasteful number, since it uses less digits than its factorization.

26386542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 295 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 26386542 is about 5136.7832346713. The cubic root of 26386542 is about 297.7105051596.

It can be divided in two parts, 2638 and 6542, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 26386542 in words is "twenty-six million, three hundred eighty-six thousand, five hundred forty-two".