320890550 has 48 divisors (see below), whose sum is σ = 609544320. Its totient is φ = 125660160.

The previous prime is 320890547. The next prime is 320890571. The reversal of 320890550 is 55098023.

It is a happy number.

320890550 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 528347 + ... + 528953.

It is an arithmetic number, because the mean of its divisors is an integer number (12698840).

Almost surely, 2^320890550 is an apocalyptic number.

320890550 is a deficient number, since it is larger than the sum of its proper divisors (288653770).

320890550 is a wasteful number, since it uses less digits than its factorization.

320890550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825 (or 820 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 320890550 is about 17913.4181551149. The cubic root of 320890550 is about 684.6242989235.

The spelling of 320890550 in words is "three hundred twenty million, eight hundred ninety thousand, five hundred fifty".