26812864 has 84 divisors (see below), whose sum is σ = 60054744. Its totient is φ = 11860992.

The previous prime is 26812853. The next prime is 26812867. The reversal of 26812864 is 46821862.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26812867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 400159 + ... + 400225.

Almost surely, 2^26812864 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 26812864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30027372).

26812864 is an abundant number, since it is smaller than the sum of its proper divisors (33241880).

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

26812864 is a wasteful number, since it uses less digits than its factorization.

26812864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 119 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 26812864 is about 5178.1139423539. The cubic root of 26812864 is about 299.3052962344.

The spelling of 26812864 in words is "twenty-six million, eight hundred twelve thousand, eight hundred sixty-four".