26866401 has 8 divisors (see below), whose sum is σ = 35846400. Its totient is φ = 17898672.

The previous prime is 26866391. The next prime is 26866421. The reversal of 26866401 is 10466862.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-26866401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26866421) 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, 5331 + ... + 9063.

It is an arithmetic number, because the mean of its divisors is an integer number (4480800).

Almost surely, 2^26866401 is an apocalyptic number.

It is an amenable number.

26866401 is a deficient number, since it is larger than the sum of its proper divisors (8979999).

26866401 is a wasteful number, since it uses less digits than its factorization.

26866401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6135.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 26866401 is about 5183.2809107746. The cubic root of 26866401 is about 299.5043705112.

The spelling of 26866401 in words is "twenty-six million, eight hundred sixty-six thousand, four hundred one".