102805328 has 10 divisors (see below), whose sum is σ = 199185354. Its totient is φ = 51402656.

The previous prime is 102805321. The next prime is 102805337. The reversal of 102805328 is 823508201.

It can be written as a sum of positive squares in only one way, i.e., 81938704 + 20866624 = 9052^2 + 4568^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 102805328.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102805321) 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 as a sum of consecutive naturals, namely, 3212651 + ... + 3212682.

Almost surely, 2^102805328 is an apocalyptic number.

It is an amenable number.

102805328 is a deficient number, since it is larger than the sum of its proper divisors (96380026).

102805328 is an equidigital number, since it uses as much as digits as its factorization.

102805328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6425341 (or 6425335 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 102805328 is about 10139.2962280427. The cubic root of 102805328 is about 468.4593099498.

The spelling of 102805328 in words is "one hundred two million, eight hundred five thousand, three hundred twenty-eight".