26828749 has 2 divisors, whose sum is σ = 26828750. Its totient is φ = 26828748.

The previous prime is 26828713. The next prime is 26828773. The reversal of 26828749 is 94782862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17280649 + 9548100 = 4157^2 + 3090^2 .

It is a cyclic number.

It is not a de Polignac number, because 26828749 - 2¹⁵ = 26795981 is a prime.

It is a nialpdrome in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 26828699 and 26828708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26828149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13414374 + 13414375.

It is an arithmetic number, because the mean of its divisors is an integer number (13414375).

Almost surely, 2^26828749 is an apocalyptic number.

It is an amenable number.

26828749 is a deficient number, since it is larger than the sum of its proper divisors (1).

26828749 is an equidigital number, since it uses as much as digits as its factorization.

26828749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 46.

The square root of 26828749 is about 5179.6475748838. The cubic root of 26828749 is about 299.3643913268.

The spelling of 26828749 in words is "twenty-six million, eight hundred twenty-eight thousand, seven hundred forty-nine".