26728601 has 2 divisors, whose sum is σ = 26728602. Its totient is φ = 26728600.

The previous prime is 26728543. The next prime is 26728609. The reversal of 26728601 is 10682762.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14055001 + 12673600 = 3749^2 + 3560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26728601 is a prime.

It is a super-2 number, since 2×26728601² = 1428836222834402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (26728609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13364300 + 13364301.

It is an arithmetic number, because the mean of its divisors is an integer number (13364301).

Almost surely, 2^26728601 is an apocalyptic number.

It is an amenable number.

26728601 is a deficient number, since it is larger than the sum of its proper divisors (1).

26728601 is an equidigital number, since it uses as much as digits as its factorization.

26728601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 26728601 is about 5169.9710830913. The cubic root of 26728601 is about 298.9914316176.

The spelling of 26728601 in words is "twenty-six million, seven hundred twenty-eight thousand, six hundred one".