26539428 has 48 divisors (see below), whose sum is σ = 66725120. Its totient is φ = 8182944.

The previous prime is 26539393. The next prime is 26539451. The reversal of 26539428 is 82493562.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 8451 + ... + 11157.

Almost surely, 2^26539428 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 26539428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33362560).

26539428 is an abundant number, since it is smaller than the sum of its proper divisors (40185692).

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

26539428 is a wasteful number, since it uses less digits than its factorization.

26539428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776 (or 2774 counting only the distinct ones).

The product of its digits is 103680, while the sum is 39.

The square root of 26539428 is about 5151.6432329889. The cubic root of 26539428 is about 298.2843853682.

It can be divided in two parts, 265 and 39428, that added together give a palindrome (39693).

The spelling of 26539428 in words is "twenty-six million, five hundred thirty-nine thousand, four hundred twenty-eight".