26928029 has 2 divisors, whose sum is σ = 26928030. Its totient is φ = 26928028.

The previous prime is 26927993. The next prime is 26928061. The reversal of 26928029 is 92082962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26759929 + 168100 = 5173^2 + 410^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26928029 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 26927983 and 26928001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26928079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13464014 + 13464015.

It is an arithmetic number, because the mean of its divisors is an integer number (13464015).

Almost surely, 2^26928029 is an apocalyptic number.

It is an amenable number.

26928029 is a deficient number, since it is larger than the sum of its proper divisors (1).

26928029 is an equidigital number, since it uses as much as digits as its factorization.

26928029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 26928029 is about 5189.2223887592. Note that the first 3 decimals coincide. The cubic root of 26928029 is about 299.7332035432.

The spelling of 26928029 in words is "twenty-six million, nine hundred twenty-eight thousand, twenty-nine".