26880001 has 2 divisors, whose sum is σ = 26880002. Its totient is φ = 26880000.

The previous prime is 26879989. The next prime is 26880011. The reversal of 26880001 is 10008862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16646400 + 10233601 = 4080^2 + 3199^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26880001 is a prime.

It is not a weakly prime, because it can be changed into another prime (26880011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13440000 + 13440001.

It is an arithmetic number, because the mean of its divisors is an integer number (13440001).

Almost surely, 2^26880001 is an apocalyptic number.

It is an amenable number.

26880001 is a deficient number, since it is larger than the sum of its proper divisors (1).

26880001 is an equidigital number, since it uses as much as digits as its factorization.

26880001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 25.

The square root of 26880001 is about 5184.5926551659. The cubic root of 26880001 is about 299.5548992035.

Adding to 26880001 its reverse (10008862), we get a palindrome (36888863).

The spelling of 26880001 in words is "twenty-six million, eight hundred eighty thousand, one".