102000028 has 24 divisors (see below), whose sum is σ = 194555088. Its totient is φ = 46507776.

The previous prime is 102000023. The next prime is 102000043. The reversal of 102000028 is 820000201.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 101999981 and 102000017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102000023) 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, 7501 + ... + 16132.

It is an arithmetic number, because the mean of its divisors is an integer number (8106462).

Almost surely, 2^102000028 is an apocalyptic number.

It is an amenable number.

102000028 is a deficient number, since it is larger than the sum of its proper divisors (92555060).

102000028 is a wasteful number, since it uses less digits than its factorization.

102000028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23733 (or 23731 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 102000028 is about 10099.5063245685. The cubic root of 102000028 is about 467.2329155889.

Adding to 102000028 its reverse (820000201), we get a palindrome (922000229).

The spelling of 102000028 in words is "one hundred two million, twenty-eight", and thus it is an aban number.