320898816 has 216 divisors, whose sum is σ = 1073296224. Its totient is φ = 90316800.

The previous prime is 320898803. The next prime is 320898821. The reversal of 320898816 is 618898023.

It is a super-2 number, since 2×320898816² = 205952100220403712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1628830 + ... + 1629026.

It is an arithmetic number, because the mean of its divisors is an integer number (4968964).

Almost surely, 2^320898816 is an apocalyptic number.

320898816 is a gapful number since it is divisible by the number (36) 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 320898816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (536648112).

320898816 is an abundant number, since it is smaller than the sum of its proper divisors (752397408).

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

320898816 is a wasteful number, since it uses less digits than its factorization.

320898816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 320898816 is about 17913.6488745314. The cubic root of 320898816 is about 684.6301774137.

The spelling of 320898816 in words is "three hundred twenty million, eight hundred ninety-eight thousand, eight hundred sixteen".