28242303157 has 2 divisors, whose sum is σ = 28242303158. Its totient is φ = 28242303156.

The previous prime is 28242303137. The next prime is 28242303217. The reversal of 28242303157 is 75130324282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22516202916 + 5726100241 = 150054^2 + 75671^2 .

It is a cyclic number.

It is not a de Polignac number, because 28242303157 - 2¹⁹ = 28241778869 is a prime.

It is a super-2 number, since 2×28242303157² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28242303127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14121151578 + 14121151579.

It is an arithmetic number, because the mean of its divisors is an integer number (14121151579).

Almost surely, 2^28242303157 is an apocalyptic number.

It is an amenable number.

28242303157 is a deficient number, since it is larger than the sum of its proper divisors (1).

28242303157 is an equidigital number, since it uses as much as digits as its factorization.

28242303157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 37.

The spelling of 28242303157 in words is "twenty-eight billion, two hundred forty-two million, three hundred three thousand, one hundred fifty-seven".