26290128 has 80 divisors (see below), whose sum is σ = 70906176. Its totient is φ = 8386560.

The previous prime is 26290123. The next prime is 26290133. The reversal of 26290128 is 82109262.

It is an interprime number because it is at equal distance from previous prime (26290123) and next prime (26290133).

It is a junction number, because it is equal to n+sod(n) for n = 26290095 and 26290104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26290123) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 200623 + ... + 200753.

Almost surely, 2^26290128 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26290128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35453088).

26290128 is an abundant number, since it is smaller than the sum of its proper divisors (44616048).

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

26290128 is a wasteful number, since it uses less digits than its factorization.

26290128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292 (or 286 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 26290128 is about 5127.3899793170. The cubic root of 26290128 is about 297.3474603453.

The spelling of 26290128 in words is "twenty-six million, two hundred ninety thousand, one hundred twenty-eight".