26810139 has 16 divisors (see below), whose sum is σ = 37959840. Its totient is φ = 16773120.

The previous prime is 26810137. The next prime is 26810141. The reversal of 26810139 is 93101862.

It is an interprime number because it is at equal distance from previous prime (26810137) and next prime (26810141).

It is not a de Polignac number, because 26810139 - 2¹ = 26810137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26810137) by changing a digit.

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, 26067 + ... + 27075.

It is an arithmetic number, because the mean of its divisors is an integer number (2372490).

Almost surely, 2^26810139 is an apocalyptic number.

26810139 is a deficient number, since it is larger than the sum of its proper divisors (11149701).

26810139 is a wasteful number, since it uses less digits than its factorization.

26810139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 26810139 is about 5177.8508089747. The cubic root of 26810139 is about 299.2951563930.

The spelling of 26810139 in words is "twenty-six million, eight hundred ten thousand, one hundred thirty-nine".