26464638 has 32 divisors (see below), whose sum is σ = 54945792. Its totient is φ = 8488800.

The previous prime is 26464637. The next prime is 26464661. The reversal of 26464638 is 83646462.

It is a junction number, because it is equal to n+sod(n) for n = 26464596 and 26464605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26464637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48648 + ... + 49188.

It is an arithmetic number, because the mean of its divisors is an integer number (1717056).

Almost surely, 2^26464638 is an apocalyptic number.

26464638 is an abundant number, since it is smaller than the sum of its proper divisors (28481154).

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

26464638 is a wasteful number, since it uses less digits than its factorization.

26464638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840.

The product of its digits is 165888, while the sum is 39.

The square root of 26464638 is about 5144.3792628460. The cubic root of 26464638 is about 298.0039261978.

The spelling of 26464638 in words is "twenty-six million, four hundred sixty-four thousand, six hundred thirty-eight".