26868421 has 4 divisors (see below), whose sum is σ = 27493312. Its totient is φ = 26243532.

The previous prime is 26868419. The next prime is 26868433. The reversal of 26868421 is 12486862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26868421 - 2¹ = 26868419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26868461) 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, 312381 + ... + 312466.

It is an arithmetic number, because the mean of its divisors is an integer number (6873328).

Almost surely, 2^26868421 is an apocalyptic number.

It is an amenable number.

26868421 is a deficient number, since it is larger than the sum of its proper divisors (624891).

26868421 is an equidigital number, since it uses as much as digits as its factorization.

26868421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624890.

The product of its digits is 36864, while the sum is 37.

The square root of 26868421 is about 5183.4757643882. The cubic root of 26868421 is about 299.5118765862.

The spelling of 26868421 in words is "twenty-six million, eight hundred sixty-eight thousand, four hundred twenty-one".