26628013 has 2 divisors, whose sum is σ = 26628014. Its totient is φ = 26628012.

The previous prime is 26627969. The next prime is 26628023. The reversal of 26628013 is 31082662.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26234884 + 393129 = 5122^2 + 627^2 .

It is a cyclic number.

It is not a de Polignac number, because 26628013 - 2¹⁷ = 26496941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26628023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13314006 + 13314007.

It is an arithmetic number, because the mean of its divisors is an integer number (13314007).

Almost surely, 2^26628013 is an apocalyptic number.

It is an amenable number.

26628013 is a deficient number, since it is larger than the sum of its proper divisors (1).

26628013 is an equidigital number, since it uses as much as digits as its factorization.

26628013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 26628013 is about 5160.2338125321. The cubic root of 26628013 is about 298.6158943631.

The spelling of 26628013 in words is "twenty-six million, six hundred twenty-eight thousand, thirteen".