26355728 has 30 divisors (see below), whose sum is σ = 59403006. Its totient is φ = 11294976.

The previous prime is 26355727. The next prime is 26355731. The reversal of 26355728 is 82755362.

It can be written as a sum of positive squares in only one way, i.e., 17875984 + 8479744 = 4228^2 + 2912^2 .

It is a zygodrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 26355691 and 26355700.

It is not an unprimeable number, because it can be changed into a prime (26355727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16025 + ... + 17592.

Almost surely, 2^26355728 is an apocalyptic number.

26355728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

26355728 is an abundant number, since it is smaller than the sum of its proper divisors (33047278).

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

26355728 is a wasteful number, since it uses less digits than its factorization.

26355728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33639 (or 33626 counting only the distinct ones).

The product of its digits is 100800, while the sum is 38.

The square root of 26355728 is about 5133.7830106073. The cubic root of 26355728 is about 297.5945720095.

The spelling of 26355728 in words is "twenty-six million, three hundred fifty-five thousand, seven hundred twenty-eight".