26403894 has 72 divisors (see below), whose sum is σ = 65356200. Its totient is φ = 7983360.

The previous prime is 26403889. The next prime is 26403899. The reversal of 26403894 is 49830462.

It is a happy number.

26403894 is a `hidden beast` number, since 2 + 640 + 3 + 8 + 9 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (26403889) and next prime (26403899).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26403899) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 58582 + ... + 59030.

It is an arithmetic number, because the mean of its divisors is an integer number (907725).

Almost surely, 2^26403894 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26403894, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32678100).

26403894 is an abundant number, since it is smaller than the sum of its proper divisors (38952306).

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

26403894 is a wasteful number, since it uses less digits than its factorization.

26403894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488 (or 465 counting only the distinct ones).

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

The square root of 26403894 is about 5138.4719518549. The cubic root of 26403894 is about 297.7757497923.

The spelling of 26403894 in words is "twenty-six million, four hundred three thousand, eight hundred ninety-four".