26278642 has 8 divisors (see below), whose sum is σ = 42450156. Its totient is φ = 12128592.

The previous prime is 26278597. The next prime is 26278643. The reversal of 26278642 is 24687262.

It can be written as a sum of positive squares in 2 ways, for example, as 24512401 + 1766241 = 4951^2 + 1329^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (26278643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505333 + ... + 505384.

Almost surely, 2^26278642 is an apocalyptic number.

26278642 is a deficient number, since it is larger than the sum of its proper divisors (16171514).

26278642 is a wasteful number, since it uses less digits than its factorization.

26278642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010732.

The product of its digits is 64512, while the sum is 37.

The square root of 26278642 is about 5126.2697939145. The cubic root of 26278642 is about 297.3041509273.

The spelling of 26278642 in words is "twenty-six million, two hundred seventy-eight thousand, six hundred forty-two".