1028140168 has 32 divisors (see below), whose sum is σ = 2106324000. Its totient is φ = 466600960.

The previous prime is 1028140133. The next prime is 1028140171. The reversal of 1028140168 is 8610418201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49128 + ... + 66856.

It is an arithmetic number, because the mean of its divisors is an integer number (65822625).

Almost surely, 2^1028140168 is an apocalyptic number.

It is an amenable number.

1028140168 is an abundant number, since it is smaller than the sum of its proper divisors (1078183832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1028140168 is a wasteful number, since it uses less digits than its factorization.

1028140168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18405 (or 18401 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 1028140168 is about 32064.6248691607. The cubic root of 1028140168 is about 1009.2934207798.

Adding to 1028140168 its reverse (8610418201), we get a palindrome (9638558369).

The spelling of 1028140168 in words is "one billion, twenty-eight million, one hundred forty thousand, one hundred sixty-eight".