8028217057 has 4 divisors (see below), whose sum is σ = 9175105216. Its totient is φ = 6881328900.

The previous prime is 8028217039. The next prime is 8028217073. The reversal of 8028217057 is 7507128208.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8028217057 - 2¹¹ = 8028215009 is a prime.

It is a super-2 number, since 2×8028217057² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8028217027) 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 in 3 ways as a sum of consecutive naturals, for example, 573444069 + ... + 573444082.

It is an arithmetic number, because the mean of its divisors is an integer number (2293776304).

Almost surely, 2^8028217057 is an apocalyptic number.

It is an amenable number.

8028217057 is a deficient number, since it is larger than the sum of its proper divisors (1146888159).

8028217057 is a wasteful number, since it uses less digits than its factorization.

8028217057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146888158.

The product of its (nonzero) digits is 62720, while the sum is 40.

The square root of 8028217057 is about 89600.3183978718. The cubic root of 8028217057 is about 2002.3486622299.

The spelling of 8028217057 in words is "eight billion, twenty-eight million, two hundred seventeen thousand, fifty-seven".