26278434 has 96 divisors (see below), whose sum is σ = 71495424. Its totient is φ = 6791040.

The previous prime is 26278429. The next prime is 26278457. The reversal of 26278434 is 43487262.

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 47 ways as a sum of consecutive naturals, for example, 99787 + ... + 100049.

It is an arithmetic number, because the mean of its divisors is an integer number (744744).

Almost surely, 2^26278434 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26278434, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35747712).

26278434 is an abundant number, since it is smaller than the sum of its proper divisors (45216990).

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

26278434 is a wasteful number, since it uses less digits than its factorization.

26278434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352 (or 349 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 26278434 is about 5126.2495062180. The cubic root of 26278434 is about 297.3033665206.

The spelling of 26278434 in words is "twenty-six million, two hundred seventy-eight thousand, four hundred thirty-four".