1028395671 has 8 divisors (see below), whose sum is σ = 1451852784. Its totient is φ = 645267840.

The previous prime is 1028395657. The next prime is 1028395703. The reversal of 1028395671 is 1765938201.

1028395671 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1028395671 - 2⁵ = 1028395639 is a prime.

It is a super-2 number, since 2×1028395671² = 2115195312263080482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028395631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10082260 + ... + 10082361.

It is an arithmetic number, because the mean of its divisors is an integer number (181481598).

Almost surely, 2^1028395671 is an apocalyptic number.

1028395671 is a deficient number, since it is larger than the sum of its proper divisors (423457113).

1028395671 is a wasteful number, since it uses less digits than its factorization.

1028395671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20164641.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 1028395671 is about 32068.6088098626. The cubic root of 1028395671 is about 1009.3770203208.

The spelling of 1028395671 in words is "one billion, twenty-eight million, three hundred ninety-five thousand, six hundred seventy-one".