320255000 has 120 divisors (see below), whose sum is σ = 814661100. Its totient is φ = 117936000.

The previous prime is 320254973. The next prime is 320255003. The reversal of 320255000 is 552023.

It is a self number, because there is not a number n which added to its sum of digits gives 320255000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320255003) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 844811 + ... + 845189.

Almost surely, 2^320255000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320255000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407330550).

320255000 is an abundant number, since it is smaller than the sum of its proper divisors (494406100).

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

320255000 is a wasteful number, since it uses less digits than its factorization.

320255000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 399 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 17.

The square root of 320255000 is about 17895.6698673171. The cubic root of 320255000 is about 684.1720153763.

The spelling of 320255000 in words is "three hundred twenty million, two hundred fifty-five thousand".