26388140 has 12 divisors (see below), whose sum is σ = 55415136. Its totient is φ = 10555248.

The previous prime is 26388139. The next prime is 26388143. The reversal of 26388140 is 4188362.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 26388097 and 26388106.

It is not an unprimeable number, because it can be changed into a prime (26388143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 659684 + ... + 659723.

It is an arithmetic number, because the mean of its divisors is an integer number (4617928).

Almost surely, 2^26388140 is an apocalyptic number.

26388140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26388140 is an abundant number, since it is smaller than the sum of its proper divisors (29026996).

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

26388140 is a wasteful number, since it uses less digits than its factorization.

26388140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1319416 (or 1319414 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 26388140 is about 5136.9387771318. The cubic root of 26388140 is about 297.7165149376.

The spelling of 26388140 in words is "twenty-six million, three hundred eighty-eight thousand, one hundred forty".