102239788280 has 128 divisors (see below), whose sum is σ = 265709030400. Its totient is φ = 34680296448.

The previous prime is 102239788279. The next prime is 102239788319. The reversal of 102239788280 is 82887932201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28969556 + ... + 28973084.

It is an arithmetic number, because the mean of its divisors is an integer number (2075851800).

Almost surely, 2^102239788280 is an apocalyptic number.

102239788280 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 102239788280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132854515200).

102239788280 is an abundant number, since it is smaller than the sum of its proper divisors (163469242120).

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

102239788280 is a wasteful number, since it uses less digits than its factorization.

102239788280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4621 (or 4617 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 50.

The spelling of 102239788280 in words is "one hundred two billion, two hundred thirty-nine million, seven hundred eighty-eight thousand, two hundred eighty".