26163864 has 64 divisors (see below), whose sum is σ = 73548000. Its totient is φ = 8616960.

The previous prime is 26163853. The next prime is 26163871. The reversal of 26163864 is 46836162.

26163864 is a `hidden beast` number, since 2 + 616 + 38 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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, 18544 + ... + 19904.

Almost surely, 2^26163864 is an apocalyptic number.

26163864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26163864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36774000).

26163864 is an abundant number, since it is smaller than the sum of its proper divisors (47384136).

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

26163864 is a wasteful number, since it uses less digits than its factorization.

26163864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465 (or 1455 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 26163864 is about 5115.0624629617. The cubic root of 26163864 is about 296.8706711686.

The spelling of 26163864 in words is "twenty-six million, one hundred sixty-three thousand, eight hundred sixty-four".