102305250 has 96 divisors (see below), whose sum is σ = 283636080. Its totient is φ = 26592000.

The previous prime is 102305227. The next prime is 102305257. The reversal of 102305250 is 52503201.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 17867529 + 84437721 = 4227^2 + 9189^2 .

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (102305257) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 91696 + ... + 92804.

Almost surely, 2^102305250 is an apocalyptic number.

102305250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 102305250, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141818040).

102305250 is an abundant number, since it is smaller than the sum of its proper divisors (181330830).

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

102305250 is a wasteful number, since it uses less digits than its factorization.

102305250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173 (or 1160 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 102305250 is about 10114.6057758076. The cubic root of 102305250 is about 467.6984963559.

Adding to 102305250 its reverse (52503201), we get a palindrome (154808451).

The spelling of 102305250 in words is "one hundred two million, three hundred five thousand, two hundred fifty".