26251904 has 64 divisors (see below), whose sum is σ = 60661440. Its totient is φ = 11083776.

The previous prime is 26251903. The next prime is 26251913. The reversal of 26251904 is 40915262.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (26251903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74192 + ... + 74544.

It is an arithmetic number, because the mean of its divisors is an integer number (947835).

Almost surely, 2^26251904 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26251904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30330720).

26251904 is an abundant number, since it is smaller than the sum of its proper divisors (34409536).

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

26251904 is an equidigital number, since it uses as much as digits as its factorization.

26251904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 26251904 is about 5123.6611909844. The cubic root of 26251904 is about 297.2032830056.

The spelling of 26251904 in words is "twenty-six million, two hundred fifty-one thousand, nine hundred four".