26723540 has 12 divisors (see below), whose sum is σ = 56119476. Its totient is φ = 10689408.

The previous prime is 26723537. The next prime is 26723549. The reversal of 26723540 is 4532762.

It can be written as a sum of positive squares in 2 ways, for example, as 8456464 + 18267076 = 2908^2 + 4274^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26723549) 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, 668069 + ... + 668108.

It is an arithmetic number, because the mean of its divisors is an integer number (4676623).

Almost surely, 2^26723540 is an apocalyptic number.

26723540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26723540 is an abundant number, since it is smaller than the sum of its proper divisors (29395936).

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

26723540 is a wasteful number, since it uses less digits than its factorization.

26723540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1336186 (or 1336184 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 26723540 is about 5169.4815987679. The cubic root of 26723540 is about 298.9725593099.

The spelling of 26723540 in words is "twenty-six million, seven hundred twenty-three thousand, five hundred forty".