299659680 has 144 divisors (see below), whose sum is σ = 1082829384. Its totient is φ = 75202560.

The previous prime is 299659673. The next prime is 299659691. The reversal of 299659680 is 86956992.

It can be written as a sum of positive squares in 4 ways, for example, as 244484496 + 55175184 = 15636^2 + 7428^2 .

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

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

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, 18360 + ... + 30600.

Almost surely, 2^299659680 is an apocalyptic number.

299659680 is a gapful number since it is divisible by the number (20) 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 299659680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (541414692).

299659680 is an abundant number, since it is smaller than the sum of its proper divisors (783169704).

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

299659680 is a wasteful number, since it uses less digits than its factorization.

299659680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12279 (or 12268 counting only the distinct ones).

The product of its (nonzero) digits is 2099520, while the sum is 54.

The square root of 299659680 is about 17310.6810957859. The cubic root of 299659680 is about 669.1797193902.

The spelling of 299659680 in words is "two hundred ninety-nine million, six hundred fifty-nine thousand, six hundred eighty".