26251380 has 144 divisors (see below), whose sum is σ = 84913920. Its totient is φ = 6553344.

The previous prime is 26251373. The next prime is 26251387. The reversal of 26251380 is 8315262.

26251380 = T₁₃₃₁ + T₁₃₃₂ + ... + T₁₃₅₉.

26251380 is a `hidden beast` number, since 2 + 625 + 1 + 38 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (26251373) and next prime (26251387).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26251387) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 245287 + ... + 245393.

It is an arithmetic number, because the mean of its divisors is an integer number (589680).

Almost surely, 2^26251380 is an apocalyptic number.

26251380 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 26251380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42456960).

26251380 is an abundant number, since it is smaller than the sum of its proper divisors (58662540).

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

26251380 is a wasteful number, since it uses less digits than its factorization.

26251380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 193 counting only the distinct ones).

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

The square root of 26251380 is about 5123.6100554199. The cubic root of 26251380 is about 297.2013055547.

It can be divided in two parts, 2625 and 1380, that added together give a triangular number (4005 = T₈₉).

The spelling of 26251380 in words is "twenty-six million, two hundred fifty-one thousand, three hundred eighty".