102320280 has 128 divisors (see below), whose sum is σ = 361195200. Its totient is φ = 25675776.

The previous prime is 102320279. The next prime is 102320287. The reversal of 102320280 is 82023201.

It is a happy number.

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 (102320287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15574 + ... + 21146.

Almost surely, 2^102320280 is an apocalyptic number.

102320280 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 102320280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180597600).

102320280 is an abundant number, since it is smaller than the sum of its proper divisors (258874920).

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

102320280 is a wasteful number, since it uses less digits than its factorization.

102320280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5610 (or 5600 counting only the distinct ones).

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

The square root of 102320280 is about 10115.3487334842. The cubic root of 102320280 is about 467.7213989413.

Adding to 102320280 its reverse (82023201), we get a palindrome (184343481).

The spelling of 102320280 in words is "one hundred two million, three hundred twenty thousand, two hundred eighty".