28470228929 has 2 divisors, whose sum is σ = 28470228930. Its totient is φ = 28470228928.

The previous prime is 28470228889. The next prime is 28470228947. The reversal of 28470228929 is 92982207482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27075057025 + 1395171904 = 164545^2 + 37352^2 .

It is a cyclic number.

It is not a de Polignac number, because 28470228929 - 2²⁴ = 28453451713 is a prime.

It is not a weakly prime, because it can be changed into another prime (28470228959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14235114464 + 14235114465.

It is an arithmetic number, because the mean of its divisors is an integer number (14235114465).

Almost surely, 2^28470228929 is an apocalyptic number.

It is an amenable number.

28470228929 is a deficient number, since it is larger than the sum of its proper divisors (1).

28470228929 is an equidigital number, since it uses as much as digits as its factorization.

28470228929 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 28470228929 in words is "twenty-eight billion, four hundred seventy million, two hundred twenty-eight thousand, nine hundred twenty-nine".