102215680 has 208 divisors, whose sum is σ = 301953024. Its totient is φ = 32440320.

The previous prime is 102215653. The next prime is 102215681. The reversal of 102215680 is 86512201.

It is not an unprimeable number, because it can be changed into a prime (102215681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3297265 + ... + 3297295.

Almost surely, 2^102215680 is an apocalyptic number.

102215680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102215680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150976512).

102215680 is an abundant number, since it is smaller than the sum of its proper divisors (199737344).

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

102215680 is an equidigital number, since it uses as much as digits as its factorization.

102215680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90 (or 68 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 102215680 is about 10110.1770508730. The cubic root of 102215680 is about 467.5619638191.

Adding to 102215680 its reverse (86512201), we get a palindrome (188727881).

The spelling of 102215680 in words is "one hundred two million, two hundred fifteen thousand, six hundred eighty".