26138250 has 48 divisors (see below), whose sum is σ = 70683912. Its totient is φ = 6969600.

The previous prime is 26138249. The next prime is 26138257. The reversal of 26138250 is 5283162.

It can be written as a sum of positive squares in 4 ways, for example, as 5861241 + 20277009 = 2421^2 + 4503^2 .

It is a super-2 number, since 2×26138250² = 1366416226125000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26138257) 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 23 ways as a sum of consecutive naturals, for example, 3559 + ... + 8058.

Almost surely, 2^26138250 is an apocalyptic number.

26138250 is an abundant number, since it is smaller than the sum of its proper divisors (44545662).

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

26138250 is a wasteful number, since it uses less digits than its factorization.

26138250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11640 (or 11627 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 26138250 is about 5112.5580681299. The cubic root of 26138250 is about 296.7737623413.

The spelling of 26138250 in words is "twenty-six million, one hundred thirty-eight thousand, two hundred fifty".