26646140 has 48 divisors (see below), whose sum is σ = 59875200. Its totient is φ = 9925632.

The previous prime is 26646131. The next prime is 26646149. The reversal of 26646140 is 4164662.

It is an interprime number because it is at equal distance from previous prime (26646131) and next prime (26646149).

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26646149) 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, 36701 + ... + 37419.

It is an arithmetic number, because the mean of its divisors is an integer number (1247400).

Almost surely, 2^26646140 is an apocalyptic number.

26646140 is a gapful number since it is divisible by the number (20) 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 26646140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29937600).

26646140 is an abundant number, since it is smaller than the sum of its proper divisors (33229060).

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

26646140 is a wasteful number, since it uses less digits than its factorization.

26646140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854 (or 852 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 26646140 is about 5161.9899263753. The cubic root of 26646140 is about 298.6836398420.

The spelling of 26646140 in words is "twenty-six million, six hundred forty-six thousand, one hundred forty".