26720385 has 8 divisors (see below), whose sum is σ = 42752640. Its totient is φ = 14250864.

The previous prime is 26720383. The next prime is 26720389. The reversal of 26720385 is 58302762.

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

It is not a de Polignac number, because 26720385 - 2¹ = 26720383 is a prime.

It is a super-3 number, since 3×26720385³ (a number of 23 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26720383) 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, 890665 + ... + 890694.

It is an arithmetic number, because the mean of its divisors is an integer number (5344080).

Almost surely, 2^26720385 is an apocalyptic number.

It is an amenable number.

26720385 is a deficient number, since it is larger than the sum of its proper divisors (16032255).

26720385 is a wasteful number, since it uses less digits than its factorization.

26720385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1781367.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 26720385 is about 5169.1764334370. The cubic root of 26720385 is about 298.9607932097.

The spelling of 26720385 in words is "twenty-six million, seven hundred twenty thousand, three hundred eighty-five".