26438401 has 16 divisors (see below), whose sum is σ = 30306240. Its totient is φ = 22841280.

The previous prime is 26438369. The next prime is 26438407. The reversal of 26438401 is 10483462.

It is not a de Polignac number, because 26438401 - 2⁵ = 26438369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26438401.

It is not an unprimeable number, because it can be changed into a prime (26438407) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 20755 + ... + 21991.

It is an arithmetic number, because the mean of its divisors is an integer number (1894140).

Almost surely, 2^26438401 is an apocalyptic number.

It is an amenable number.

26438401 is a deficient number, since it is larger than the sum of its proper divisors (3867839).

26438401 is a wasteful number, since it uses less digits than its factorization.

26438401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344.

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 26438401 is about 5141.8285657925. The cubic root of 26438401 is about 297.9054134295.

The spelling of 26438401 in words is "twenty-six million, four hundred thirty-eight thousand, four hundred one".