26578641 has 16 divisors (see below), whose sum is σ = 36384768. Its totient is φ = 17250000.

The previous prime is 26578631. The next prime is 26578661. The reversal of 26578641 is 14687562.

It is not a de Polignac number, because 26578641 - 2¹³ = 26570449 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26578641.

It is not an unprimeable number, because it can be changed into a prime (26578621) 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 15 ways as a sum of consecutive naturals, for example, 35016 + ... + 35766.

It is an arithmetic number, because the mean of its divisors is an integer number (2274048).

Almost surely, 2^26578641 is an apocalyptic number.

It is an amenable number.

26578641 is a deficient number, since it is larger than the sum of its proper divisors (9806127).

26578641 is a wasteful number, since it uses less digits than its factorization.

26578641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1052.

The product of its digits is 80640, while the sum is 39.

The square root of 26578641 is about 5155.4477012186. The cubic root of 26578641 is about 298.4312218611.

The spelling of 26578641 in words is "twenty-six million, five hundred seventy-eight thousand, six hundred forty-one".