26888421 has 8 divisors (see below), whose sum is σ = 40972864. Its totient is φ = 15364800.

The previous prime is 26888383. The next prime is 26888429. The reversal of 26888421 is 12488862.

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

It is not a de Polignac number, because 26888421 - 2⁹ = 26887909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26888421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26888429) 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, 640180 + ... + 640221.

It is an arithmetic number, because the mean of its divisors is an integer number (5121608).

Almost surely, 2^26888421 is an apocalyptic number.

26888421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

26888421 is a deficient number, since it is larger than the sum of its proper divisors (14084443).

26888421 is a wasteful number, since it uses less digits than its factorization.

26888421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1280411.

The product of its digits is 49152, while the sum is 39.

The square root of 26888421 is about 5185.4046129497. The cubic root of 26888421 is about 299.5861738667.

The spelling of 26888421 in words is "twenty-six million, eight hundred eighty-eight thousand, four hundred twenty-one".