4320920 has 16 divisors (see below), whose sum is σ = 9722160. Its totient is φ = 1728352.

The previous prime is 4320919. The next prime is 4320929. The reversal of 4320920 is 290234.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 4320892 and 4320901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4320929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53972 + ... + 54051.

It is an arithmetic number, because the mean of its divisors is an integer number (607635).

Almost surely, 2^4320920 is an apocalyptic number.

4320920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4320920 is an abundant number, since it is smaller than the sum of its proper divisors (5401240).

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

4320920 is a wasteful number, since it uses less digits than its factorization.

4320920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108034 (or 108030 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 4320920 is about 2078.6822749040. The cubic root of 4320920 is about 162.8766175834.

The spelling of 4320920 in words is "four million, three hundred twenty thousand, nine hundred twenty".