8272728157 has 2 divisors, whose sum is σ = 8272728158. Its totient is φ = 8272728156.

The previous prime is 8272728133. The next prime is 8272728223. The reversal of 8272728157 is 7518272728.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7757029476 + 515698681 = 88074^2 + 22709^2 .

It is a cyclic number.

It is not a de Polignac number, because 8272728157 - 2⁷ = 8272728029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8272728157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8272728127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4136364078 + 4136364079.

It is an arithmetic number, because the mean of its divisors is an integer number (4136364079).

Almost surely, 2^8272728157 is an apocalyptic number.

It is an amenable number.

8272728157 is a deficient number, since it is larger than the sum of its proper divisors (1).

8272728157 is an equidigital number, since it uses as much as digits as its factorization.

8272728157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 878080, while the sum is 49.

The square root of 8272728157 is about 90954.5389576573. The cubic root of 8272728157 is about 2022.4738632376.

The spelling of 8272728157 in words is "eight billion, two hundred seventy-two million, seven hundred twenty-eight thousand, one hundred fifty-seven".