26140128 has 72 divisors (see below), whose sum is σ = 79835112. Its totient is φ = 7467264.

The previous prime is 26140123. The next prime is 26140139. The reversal of 26140128 is 82104162.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 26140098 and 26140107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26140123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1926 + ... + 7482.

It is an arithmetic number, because the mean of its divisors is an integer number (1108821).

Almost surely, 2^26140128 is an apocalyptic number.

26140128 is a gapful number since it is divisible by the number (28) 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 26140128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39917556).

26140128 is an abundant number, since it is smaller than the sum of its proper divisors (53694984).

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

26140128 is a wasteful number, since it uses less digits than its factorization.

26140128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5584 (or 5569 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 26140128 is about 5112.7417302266. The cubic root of 26140128 is about 296.7808697768.

The spelling of 26140128 in words is "twenty-six million, one hundred forty thousand, one hundred twenty-eight".