26890517 has 8 divisors (see below), whose sum is σ = 27411072. Its totient is φ = 26373600.

The previous prime is 26890483. The next prime is 26890531. The reversal of 26890517 is 71509862.

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 26890517 - 2⁸ = 26890261 is a prime.

It is a super-3 number, since 3×26890517³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26890537) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17417 + ... + 18897.

It is an arithmetic number, because the mean of its divisors is an integer number (3426384).

Almost surely, 2^26890517 is an apocalyptic number.

It is an amenable number.

26890517 is a deficient number, since it is larger than the sum of its proper divisors (520555).

26890517 is a wasteful number, since it uses less digits than its factorization.

26890517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 26890517 is about 5185.6067147442. The cubic root of 26890517 is about 299.5939580886.

The spelling of 26890517 in words is "twenty-six million, eight hundred ninety thousand, five hundred seventeen".