26140240 has 40 divisors (see below), whose sum is σ = 69459840. Its totient is φ = 8962176.

The previous prime is 26140217. The next prime is 26140253. The reversal of 26140240 is 4204162.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22780 + ... + 23899.

It is an arithmetic number, because the mean of its divisors is an integer number (1736496).

Almost surely, 2^26140240 is an apocalyptic number.

26140240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26140240 is an abundant number, since it is smaller than the sum of its proper divisors (43319600).

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

26140240 is a wasteful number, since it uses less digits than its factorization.

26140240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46699 (or 46693 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 26140240 is about 5112.7526832422. The cubic root of 26140240 is about 296.7812936387.

The spelling of 26140240 in words is "twenty-six million, one hundred forty thousand, two hundred forty".