26444540 has 12 divisors (see below), whose sum is σ = 55533576. Its totient is φ = 10577808.

The previous prime is 26444521. The next prime is 26444543. The reversal of 26444540 is 4544462.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26444543) 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, 661094 + ... + 661133.

It is an arithmetic number, because the mean of its divisors is an integer number (4627798).

Almost surely, 2^26444540 is an apocalyptic number.

26444540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26444540 is an abundant number, since it is smaller than the sum of its proper divisors (29089036).

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

26444540 is a wasteful number, since it uses less digits than its factorization.

26444540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1322236 (or 1322234 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 29.

The square root of 26444540 is about 5142.4254977588. The cubic root of 26444540 is about 297.9284695364.

The spelling of 26444540 in words is "twenty-six million, four hundred forty-four thousand, five hundred forty".