106780320 has 144 divisors (see below), whose sum is σ = 377100360. Its totient is φ = 27482112.

The previous prime is 106780279. The next prime is 106780321. The reversal of 106780320 is 23087601.

It can be written as a sum of positive squares in 4 ways, for example, as 83393424 + 23386896 = 9132^2 + 4836^2 .

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×106780320² = 22804073478604800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106780321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40482 + ... + 43038.

Almost surely, 2^106780320 is an apocalyptic number.

106780320 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 106780320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188550180).

106780320 is an abundant number, since it is smaller than the sum of its proper divisors (270320040).

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

106780320 is a wasteful number, since it uses less digits than its factorization.

106780320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2607 (or 2596 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 106780320 is about 10333.4563433539. The cubic root of 106780320 is about 474.4208194688.

The spelling of 106780320 in words is "one hundred six million, seven hundred eighty thousand, three hundred twenty".