26520440 has 64 divisors (see below), whose sum is σ = 62112960. Its totient is φ = 10183680.

The previous prime is 26520433. The next prime is 26520457. The reversal of 26520440 is 4402562.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 168842 + ... + 168998.

It is an arithmetic number, because the mean of its divisors is an integer number (970515).

Almost surely, 2^26520440 is an apocalyptic number.

26520440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26520440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31056480).

26520440 is an abundant number, since it is smaller than the sum of its proper divisors (35592520).

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

26520440 is a wasteful number, since it uses less digits than its factorization.

26520440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 26520440 is about 5149.7999961164. The cubic root of 26520440 is about 298.2132311695.

The spelling of 26520440 in words is "twenty-six million, five hundred twenty thousand, four hundred forty".