102239280 has 320 divisors, whose sum is σ = 414973440. Its totient is φ = 22809600.

The previous prime is 102239273. The next prime is 102239311. The reversal of 102239280 is 82932201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 308715 + ... + 309045.

It is an arithmetic number, because the mean of its divisors is an integer number (1296792).

Almost surely, 2^102239280 is an apocalyptic number.

102239280 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 102239280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (207486720).

102239280 is an abundant number, since it is smaller than the sum of its proper divisors (312734160).

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

102239280 is a wasteful number, since it uses less digits than its factorization.

102239280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 365 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 102239280 is about 10111.3441242992. The cubic root of 102239280 is about 467.5979452955.

It can be divided in two parts, 10223 and 9280, that added together give a triangular number (19503 = T₁₉₇).

The spelling of 102239280 in words is "one hundred two million, two hundred thirty-nine thousand, two hundred eighty".