26985728 has 108 divisors (see below), whose sum is σ = 69021792. Its totient is φ = 10229760.

The previous prime is 26985709. The next prime is 26985731. The reversal of 26985728 is 82758962.

Its product of digits (483840) is a multiple of the sum of its prime factors (108).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 729326 + ... + 729362.

Almost surely, 2^26985728 is an apocalyptic number.

26985728 is a gapful number since it is divisible by the number (28) 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 26985728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34510896).

26985728 is an abundant number, since it is smaller than the sum of its proper divisors (42036064).

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

26985728 is an equidigital number, since it uses as much as digits as its factorization.

26985728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108 (or 57 counting only the distinct ones).

The product of its digits is 483840, while the sum is 47.

The square root of 26985728 is about 5194.7789173361. The cubic root of 26985728 is about 299.9471314243.

The spelling of 26985728 in words is "twenty-six million, nine hundred eighty-five thousand, seven hundred twenty-eight".