102445280 has 144 divisors (see below), whose sum is σ = 286992720. Its totient is φ = 34449408.

The previous prime is 102445271. The next prime is 102445303. The reversal of 102445280 is 82544201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 572231 + ... + 572409.

It is an arithmetic number, because the mean of its divisors is an integer number (1993005).

Almost surely, 2^102445280 is an apocalyptic number.

102445280 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 102445280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143496360).

102445280 is an abundant number, since it is smaller than the sum of its proper divisors (184547440).

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

102445280 is a wasteful number, since it uses less digits than its factorization.

102445280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 102445280 is about 10121.5255767103. The cubic root of 102445280 is about 467.9117860374.

Adding to 102445280 its reverse (82544201), we get a palindrome (184989481).

The spelling of 102445280 in words is "one hundred two million, four hundred forty-five thousand, two hundred eighty".