28542020929 has 2 divisors, whose sum is σ = 28542020930. Its totient is φ = 28542020928.

The previous prime is 28542020839. The next prime is 28542020933. The reversal of 28542020929 is 92902024582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28240130304 + 301890625 = 168048^2 + 17375^2 .

It is a cyclic number.

It is not a de Polignac number, because 28542020929 - 2¹¹ = 28542018881 is a prime.

It is a super-2 number, since 2×28542020929² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28542021929) 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, 14271010464 + 14271010465.

It is an arithmetic number, because the mean of its divisors is an integer number (14271010465).

Almost surely, 2^28542020929 is an apocalyptic number.

It is an amenable number.

28542020929 is a deficient number, since it is larger than the sum of its proper divisors (1).

28542020929 is an equidigital number, since it uses as much as digits as its factorization.

28542020929 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 207360, while the sum is 43.

The spelling of 28542020929 in words is "twenty-eight billion, five hundred forty-two million, twenty thousand, nine hundred twenty-nine".