26728704 has 90 divisors (see below), whose sum is σ = 79761990. Its totient is φ = 8902656.

The previous prime is 26728699. The next prime is 26728721. The reversal of 26728704 is 40782762.

It can be written as a sum of positive squares in only one way, i.e., 25401600 + 1327104 = 5040^2 + 1152^2 .

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

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 20092 + ... + 21380.

Almost surely, 2^26728704 is an apocalyptic number.

26728704 is a gapful number since it is divisible by the number (24) 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 26728704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39880995).

26728704 is an abundant number, since it is smaller than the sum of its proper divisors (53033286).

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

26728704 is an equidigital number, since it uses as much as digits as its factorization.

26728704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317 (or 1294 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 26728704 is about 5169.9810444527. The cubic root of 26728704 is about 298.9918156766.

The spelling of 26728704 in words is "twenty-six million, seven hundred twenty-eight thousand, seven hundred four".