320550420 has 48 divisors (see below), whose sum is σ = 906272640. Its totient is φ = 84648576.

The previous prime is 320550409. The next prime is 320550437. The reversal of 320550420 is 24055023.

It is a super-3 number, since 3×320550420³ (a number of 26 digits) contains 333 as substring.

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 15 ways as a sum of consecutive naturals, for example, 19755 + ... + 32114.

It is an arithmetic number, because the mean of its divisors is an integer number (18880680).

Almost surely, 2^320550420 is an apocalyptic number.

320550420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320550420 is an abundant number, since it is smaller than the sum of its proper divisors (585722220).

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

320550420 is a wasteful number, since it uses less digits than its factorization.

320550420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51984 (or 51982 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 21.

The square root of 320550420 is about 17903.9219167198. The cubic root of 320550420 is about 684.3823227673.

The spelling of 320550420 in words is "three hundred twenty million, five hundred fifty thousand, four hundred twenty".