26987928 has 64 divisors (see below), whose sum is σ = 74200320. Its totient is φ = 8112000.

The previous prime is 26987899. The next prime is 26987929. The reversal of 26987928 is 82978962.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26987929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39526 + ... + 40202.

It is an arithmetic number, because the mean of its divisors is an integer number (1159380).

Almost surely, 2^26987928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26987928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37100160).

26987928 is an abundant number, since it is smaller than the sum of its proper divisors (47212392).

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

26987928 is a wasteful number, since it uses less digits than its factorization.

26987928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848 (or 844 counting only the distinct ones).

The product of its digits is 870912, while the sum is 51.

The square root of 26987928 is about 5194.9906640917. The cubic root of 26987928 is about 299.9552822236.

The spelling of 26987928 in words is "twenty-six million, nine hundred eighty-seven thousand, nine hundred twenty-eight".