26707640 has 16 divisors (see below), whose sum is σ = 60092280. Its totient is φ = 10683040.

The previous prime is 26707633. The next prime is 26707643. The reversal of 26707640 is 4670762.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 26707597 and 26707606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26707643) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 333806 + ... + 333885.

Almost surely, 2^26707640 is an apocalyptic number.

26707640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26707640 is an abundant number, since it is smaller than the sum of its proper divisors (33384640).

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

26707640 is a wasteful number, since it uses less digits than its factorization.

26707640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667702 (or 667698 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 26707640 is about 5167.9434981431. The cubic root of 26707640 is about 298.9132532102.

The spelling of 26707640 in words is "twenty-six million, seven hundred seven thousand, six hundred forty".