26144140 has 48 divisors (see below), whose sum is σ = 60367104. Its totient is φ = 9432000.

The previous prime is 26144081. The next prime is 26144143. The reversal of 26144140 is 4144162.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (26144143) 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, 32827 + ... + 33613.

It is an arithmetic number, because the mean of its divisors is an integer number (1257648).

Almost surely, 2^26144140 is an apocalyptic number.

26144140 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 26144140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30183552).

26144140 is an abundant number, since it is smaller than the sum of its proper divisors (34222964).

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

26144140 is a wasteful number, since it uses less digits than its factorization.

26144140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958 (or 956 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 26144140 is about 5113.1340682599. The cubic root of 26144140 is about 296.7960523592.

Adding to 26144140 its sum of digits (22), we get a palindrome (26144162).

The spelling of 26144140 in words is "twenty-six million, one hundred forty-four thousand, one hundred forty".