102102628 has 12 divisors (see below), whose sum is σ = 183037932. Its totient is φ = 49806080.

The previous prime is 102102601. The next prime is 102102641. The reversal of 102102628 is 826201201.

It can be written as a sum of positive squares in 2 ways, for example, as 50808384 + 51294244 = 7128^2 + 7162^2 .

It is a junction number, because it is equal to n+sod(n) for n = 102102599 and 102102608.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311125 + ... + 311452.

It is an arithmetic number, because the mean of its divisors is an integer number (15253161).

Almost surely, 2^102102628 is an apocalyptic number.

It is an amenable number.

102102628 is a deficient number, since it is larger than the sum of its proper divisors (80935304).

102102628 is a wasteful number, since it uses less digits than its factorization.

102102628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622622 (or 622620 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 102102628 is about 10104.5845040754. The cubic root of 102102628 is about 467.3895234961.

Adding to 102102628 its reverse (826201201), we get a palindrome (928303829).

The spelling of 102102628 in words is "one hundred two million, one hundred two thousand, six hundred twenty-eight".