26890159 has 4 divisors (see below), whose sum is σ = 26975304. Its totient is φ = 26805016.

The previous prime is 26890153. The next prime is 26890169. The reversal of 26890159 is 95109862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26890159 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26890153) 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, 42097 + ... + 42730.

It is an arithmetic number, because the mean of its divisors is an integer number (6743826).

Almost surely, 2^26890159 is an apocalyptic number.

26890159 is a deficient number, since it is larger than the sum of its proper divisors (85145).

26890159 is an equidigital number, since it uses as much as digits as its factorization.

26890159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85144.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 26890159 is about 5185.5721960069. The cubic root of 26890159 is about 299.5926285602.

The spelling of 26890159 in words is "twenty-six million, eight hundred ninety thousand, one hundred fifty-nine".