102320208 has 30 divisors (see below), whose sum is σ = 286354874. Its totient is φ = 34106688.

The previous prime is 102320201. The next prime is 102320279. The reversal of 102320208 is 802023201.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 95413824 + 6906384 = 9768^2 + 2628^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102320201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 355135 + ... + 355422.

Almost surely, 2^102320208 is an apocalyptic number.

102320208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

102320208 is an abundant number, since it is smaller than the sum of its proper divisors (184034666).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102320208 is a wasteful number, since it uses less digits than its factorization.

102320208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710571 (or 710562 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 102320208 is about 10115.3451745356. The cubic root of 102320208 is about 467.7212892337.

Adding to 102320208 its reverse (802023201), we get a palindrome (904343409).

The spelling of 102320208 in words is "one hundred two million, three hundred twenty thousand, two hundred eight".