26280139 has 8 divisors (see below), whose sum is σ = 27064800. Its totient is φ = 25502400.

The previous prime is 26280131. The next prime is 26280143. The reversal of 26280139 is 93108262.

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

It is a cyclic number.

It is not a de Polignac number, because 26280139 - 2³ = 26280131 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26280139.

It is not an unprimeable number, because it can be changed into a prime (26280131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6549 + ... + 9769.

It is an arithmetic number, because the mean of its divisors is an integer number (3383100).

Almost surely, 2^26280139 is an apocalyptic number.

26280139 is a deficient number, since it is larger than the sum of its proper divisors (784661).

26280139 is a wasteful number, since it uses less digits than its factorization.

26280139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3461.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 26280139 is about 5126.4158044388. The cubic root of 26280139 is about 297.3097962705.

The spelling of 26280139 in words is "twenty-six million, two hundred eighty thousand, one hundred thirty-nine".