28874457461 has 2 divisors, whose sum is σ = 28874457462. Its totient is φ = 28874457460.

The previous prime is 28874457401. The next prime is 28874457467. The reversal of 28874457461 is 16475447882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26865176836 + 2009280625 = 163906^2 + 44825^2 .

It is a cyclic number.

It is not a de Polignac number, because 28874457461 - 2¹⁴ = 28874441077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28874457397 and 28874457406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28874457467) 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, 14437228730 + 14437228731.

It is an arithmetic number, because the mean of its divisors is an integer number (14437228731).

Almost surely, 2^28874457461 is an apocalyptic number.

It is an amenable number.

28874457461 is a deficient number, since it is larger than the sum of its proper divisors (1).

28874457461 is an equidigital number, since it uses as much as digits as its factorization.

28874457461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12042240, while the sum is 56.

The spelling of 28874457461 in words is "twenty-eight billion, eight hundred seventy-four million, four hundred fifty-seven thousand, four hundred sixty-one".