26885540 has 24 divisors (see below), whose sum is σ = 61592832. Its totient is φ = 9776480.

The previous prime is 26885531. The next prime is 26885543. The reversal of 26885540 is 4558862.

It is a super-2 number, since 2×26885540² = 1445664522183200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26885494 and 26885503.

It is not an unprimeable number, because it can be changed into a prime (26885543) 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 7 ways as a sum of consecutive naturals, for example, 60884 + ... + 61323.

It is an arithmetic number, because the mean of its divisors is an integer number (2566368).

Almost surely, 2^26885540 is an apocalyptic number.

26885540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26885540 is an abundant number, since it is smaller than the sum of its proper divisors (34707292).

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

26885540 is a wasteful number, since it uses less digits than its factorization.

26885540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122227 (or 122225 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 38.

The square root of 26885540 is about 5185.1268065497. The cubic root of 26885540 is about 299.5754736153.

It can be divided in two parts, 2688 and 5540, that added together give a palindrome (8228).

The spelling of 26885540 in words is "twenty-six million, eight hundred eighty-five thousand, five hundred forty".