26487040 has 36 divisors (see below), whose sum is σ = 63447804. Its totient is φ = 10594304.

The previous prime is 26487031. The next prime is 26487049. The reversal of 26487040 is 4078462.

It is an interprime number because it is at equal distance from previous prime (26487031) and next prime (26487049).

It can be written as a sum of positive squares in 2 ways, for example, as 17438976 + 9048064 = 4176^2 + 3008^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26486993 and 26487011.

It is not an unprimeable number, because it can be changed into a prime (26487049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9067 + ... + 11626.

It is an arithmetic number, because the mean of its divisors is an integer number (1762439).

Almost surely, 2^26487040 is an apocalyptic number.

26487040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26487040 is an abundant number, since it is smaller than the sum of its proper divisors (36960764).

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

26487040 is an equidigital number, since it uses as much as digits as its factorization.

26487040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20714 (or 20700 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 26487040 is about 5146.5561300738. The cubic root of 26487040 is about 298.0879880713.

The spelling of 26487040 in words is "twenty-six million, four hundred eighty-seven thousand, forty".