1028500101 has 24 divisors (see below), whose sum is σ = 1528663136. Its totient is φ = 665975520.

The previous prime is 1028500097. The next prime is 1028500117. The reversal of 1028500101 is 1010058201.

It is not a de Polignac number, because 1028500101 - 2² = 1028500097 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028500141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62706 + ... + 77388.

Almost surely, 2^1028500101 is an apocalyptic number.

It is an amenable number.

1028500101 is a deficient number, since it is larger than the sum of its proper divisors (500163035).

1028500101 is a wasteful number, since it uses less digits than its factorization.

1028500101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14913 (or 14910 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1028500101 is about 32070.2369963179. The cubic root of 1028500101 is about 1009.4111854051.

Adding to 1028500101 its reverse (1010058201), we get a palindrome (2038558302).

The spelling of 1028500101 in words is "one billion, twenty-eight million, five hundred thousand, one hundred one".