102161280 has 128 divisors (see below), whose sum is σ = 350773920. Its totient is φ = 25141248.

The previous prime is 102161243. The next prime is 102161291. The reversal of 102161280 is 82161201.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22914 + ... + 27006.

Almost surely, 2^102161280 is an apocalyptic number.

102161280 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 102161280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175386960).

102161280 is an abundant number, since it is smaller than the sum of its proper divisors (248612640).

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

102161280 is a wasteful number, since it uses less digits than its factorization.

102161280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4128 (or 4116 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

The square root of 102161280 is about 10107.4863343959. The cubic root of 102161280 is about 467.4790023646.

The spelling of 102161280 in words is "one hundred two million, one hundred sixty-one thousand, two hundred eighty".