26680040 has 32 divisors (see below), whose sum is σ = 60859080. Its totient is φ = 10524672.

The previous prime is 26680019. The next prime is 26680051. The reversal of 26680040 is 4008662.

It can be written as a sum of positive squares in 4 ways, for example, as 13734436 + 12945604 = 3706^2 + 3598^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26679991 and 26680009.

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, 1649 + ... + 7488.

Almost surely, 2^26680040 is an apocalyptic number.

26680040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26680040 is an abundant number, since it is smaller than the sum of its proper divisors (34179040).

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

26680040 is a wasteful number, since it uses less digits than its factorization.

26680040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9221 (or 9217 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 26680040 is about 5165.2725000720. The cubic root of 26680040 is about 298.8102508569.

The spelling of 26680040 in words is "twenty-six million, six hundred eighty thousand, forty".