26433864 has 120 divisors (see below), whose sum is σ = 78832710. Its totient is φ = 8273664.

The previous prime is 26433851. The next prime is 26433871. The reversal of 26433864 is 46833462.

It is a happy number.

26433864 is a `hidden beast` number, since 2 + 643 + 3 + 8 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26316900 + 116964 = 5130^2 + 342^2 .

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 (11) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 233872 + ... + 233984.

Almost surely, 2^26433864 is an apocalyptic number.

26433864 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 26433864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39416355).

26433864 is an abundant number, since it is smaller than the sum of its proper divisors (52398846).

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

26433864 is a wasteful number, since it uses less digits than its factorization.

26433864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169 (or 137 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 26433864 is about 5141.3873614035. The cubic root of 26433864 is about 297.8883716250. Note that the first 3 decimals are identical.

The spelling of 26433864 in words is "twenty-six million, four hundred thirty-three thousand, eight hundred sixty-four".