299720320 has 64 divisors (see below), whose sum is σ = 733249440. Its totient is φ = 117089280.

The previous prime is 299720303. The next prime is 299720321. The reversal of 299720320 is 23027992.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (299720321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22075 + ... + 32965.

Almost surely, 2^299720320 is an apocalyptic number.

299720320 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 299720320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (366624720).

299720320 is an abundant number, since it is smaller than the sum of its proper divisors (433529120).

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

299720320 is a wasteful number, since it uses less digits than its factorization.

299720320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10953 (or 10941 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 299720320 is about 17312.4325269443. The cubic root of 299720320 is about 669.2248553939.

The spelling of 299720320 in words is "two hundred ninety-nine million, seven hundred twenty thousand, three hundred twenty".