26002540 has 12 divisors (see below), whose sum is σ = 54605376. Its totient is φ = 10401008.

The previous prime is 26002523. The next prime is 26002553. The reversal of 26002540 is 4520062.

It is a super-2 number, since 2×26002540² = 1352264172903200, which contains 22 as substring.

It is an unprimeable number.

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, 650044 + ... + 650083.

It is an arithmetic number, because the mean of its divisors is an integer number (4550448).

Almost surely, 2^26002540 is an apocalyptic number.

26002540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26002540 is an abundant number, since it is smaller than the sum of its proper divisors (28602836).

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

26002540 is a wasteful number, since it uses less digits than its factorization.

26002540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300136 (or 1300134 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 26002540 is about 5099.2685750017. The cubic root of 26002540 is about 296.2592536292.

The spelling of 26002540 in words is "twenty-six million, two thousand, five hundred forty".