102307028 has 12 divisors (see below), whose sum is σ = 179339412. Its totient is φ = 51067200.

The previous prime is 102307027. The next prime is 102307031. The reversal of 102307028 is 820703201.

It can be written as a sum of positive squares in 2 ways, for example, as 95609284 + 6697744 = 9778^2 + 2588^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102306994 and 102307012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102307021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18875 + ... + 23682.

It is an arithmetic number, because the mean of its divisors is an integer number (14944951).

Almost surely, 2^102307028 is an apocalyptic number.

It is an amenable number.

102307028 is a deficient number, since it is larger than the sum of its proper divisors (77032384).

102307028 is a wasteful number, since it uses less digits than its factorization.

102307028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43162 (or 43160 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 102307028 is about 10114.6936681246. The cubic root of 102307028 is about 467.7012057741.

The spelling of 102307028 in words is "one hundred two million, three hundred seven thousand, twenty-eight".