26128542 has 16 divisors (see below), whose sum is σ = 57007872. Its totient is φ = 7917720.

The previous prime is 26128511. The next prime is 26128547. The reversal of 26128542 is 24582162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26128547) 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 7 ways as a sum of consecutive naturals, for example, 197878 + ... + 198009.

It is an arithmetic number, because the mean of its divisors is an integer number (3562992).

Almost surely, 2^26128542 is an apocalyptic number.

26128542 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

26128542 is an abundant number, since it is smaller than the sum of its proper divisors (30879330).

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

26128542 is a wasteful number, since it uses less digits than its factorization.

26128542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395903.

The product of its digits is 7680, while the sum is 30.

The square root of 26128542 is about 5111.6085530878. The cubic root of 26128542 is about 296.7370162388.

The spelling of 26128542 in words is "twenty-six million, one hundred twenty-eight thousand, five hundred forty-two".