26540072 has 16 divisors (see below), whose sum is σ = 53590740. Its totient is φ = 12249216.

The previous prime is 26540071. The next prime is 26540081. The reversal of 26540072 is 27004562.

It can be written as a sum of positive squares in 2 ways, for example, as 26275876 + 264196 = 5126^2 + 514^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (26540071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127493 + ... + 127700.

Almost surely, 2^26540072 is an apocalyptic number.

It is an amenable number.

26540072 is an abundant number, since it is smaller than the sum of its proper divisors (27050668).

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

26540072 is a wasteful number, since it uses less digits than its factorization.

26540072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255212 (or 255208 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 26540072 is about 5151.7057369380. The cubic root of 26540072 is about 298.2867980501.

The spelling of 26540072 in words is "twenty-six million, five hundred forty thousand, seventy-two".