26728251 has 16 divisors (see below), whose sum is σ = 39123840. Its totient is φ = 16096320.

The previous prime is 26728249. The next prime is 26728291. The reversal of 26728251 is 15282762.

It is not a de Polignac number, because 26728251 - 2¹ = 26728249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (26728211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2895 + ... + 7863.

It is an arithmetic number, because the mean of its divisors is an integer number (2445240).

Almost surely, 2^26728251 is an apocalyptic number.

26728251 is a deficient number, since it is larger than the sum of its proper divisors (12395589).

26728251 is a wasteful number, since it uses less digits than its factorization.

26728251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5146.

The product of its digits is 13440, while the sum is 33.

The square root of 26728251 is about 5169.9372336615. The cubic root of 26728251 is about 298.9901265555.

The spelling of 26728251 in words is "twenty-six million, seven hundred twenty-eight thousand, two hundred fifty-one".