26128656 has 50 divisors (see below), whose sum is σ = 75627662. Its totient is φ = 8709120.

The previous prime is 26128637. The next prime is 26128693. The reversal of 26128656 is 65682162.

It can be written as a sum of positive squares in only one way, i.e., 23619600 + 2509056 = 4860^2 + 1584^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 26128656.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8785 + ... + 11376.

Almost surely, 2^26128656 is an apocalyptic number.

It is an amenable number.

26128656 is an abundant number, since it is smaller than the sum of its proper divisors (49499006).

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

26128656 is a wasteful number, since it uses less digits than its factorization.

26128656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20181 (or 20166 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 26128656 is about 5111.6197041642. The cubic root of 26128656 is about 296.7374477971.

The spelling of 26128656 in words is "twenty-six million, one hundred twenty-eight thousand, six hundred fifty-six".