26505638 has 16 divisors (see below), whose sum is σ = 40388544. Its totient is φ = 13044480.

The previous prime is 26505631. The next prime is 26505641. The reversal of 26505638 is 83650562.

It is a junction number, because it is equal to n+sod(n) for n = 26505598 and 26505607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26505631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61283 + ... + 61713.

It is an arithmetic number, because the mean of its divisors is an integer number (2524284).

Almost surely, 2^26505638 is an apocalyptic number.

26505638 is a deficient number, since it is larger than the sum of its proper divisors (13882906).

26505638 is a wasteful number, since it uses less digits than its factorization.

26505638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847.

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 26505638 is about 5148.3626523391. The cubic root of 26505638 is about 298.1577397104.

The spelling of 26505638 in words is "twenty-six million, five hundred five thousand, six hundred thirty-eight".