26889940 has 96 divisors (see below), whose sum is σ = 74188800. Its totient is φ = 7931520.

The previous prime is 26889911. The next prime is 26889953. The reversal of 26889940 is 4998862.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28801 + ... + 29719.

It is an arithmetic number, because the mean of its divisors is an integer number (772800).

Almost surely, 2^26889940 is an apocalyptic number.

26889940 is a gapful number since it is divisible by the number (20) 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 26889940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37094400).

26889940 is an abundant number, since it is smaller than the sum of its proper divisors (47298860).

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

26889940 is a wasteful number, since it uses less digits than its factorization.

26889940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965 (or 963 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 26889940 is about 5185.5510796829. The cubic root of 26889940 is about 299.5918152396.

The spelling of 26889940 in words is "twenty-six million, eight hundred eighty-nine thousand, nine hundred forty".