28493826761 has 2 divisors, whose sum is σ = 28493826762. Its totient is φ = 28493826760.

The previous prime is 28493826743. The next prime is 28493826821. The reversal of 28493826761 is 16762839482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22281234361 + 6212592400 = 149269^2 + 78820^2 .

It is a cyclic number.

It is not a de Polignac number, because 28493826761 - 2¹⁴ = 28493810377 is a prime.

It is a super-2 number, since 2×28493826761² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28493826697 and 28493826706.

It is not a weakly prime, because it can be changed into another prime (28493826661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14246913380 + 14246913381.

It is an arithmetic number, because the mean of its divisors is an integer number (14246913381).

Almost surely, 2^28493826761 is an apocalyptic number.

It is an amenable number.

28493826761 is a deficient number, since it is larger than the sum of its proper divisors (1).

28493826761 is an equidigital number, since it uses as much as digits as its factorization.

28493826761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6967296, while the sum is 56.

The spelling of 28493826761 in words is "twenty-eight billion, four hundred ninety-three million, eight hundred twenty-six thousand, seven hundred sixty-one".