4320428 has 48 divisors (see below), whose sum is σ = 9139200. Its totient is φ = 1785168.

The previous prime is 4320419. The next prime is 4320443. The reversal of 4320428 is 8240234.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 64451 + ... + 64517.

It is an arithmetic number, because the mean of its divisors is an integer number (190400).

Almost surely, 2^4320428 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 4320428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4569600).

4320428 is an abundant number, since it is smaller than the sum of its proper divisors (4818772).

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

4320428 is a wasteful number, since it uses less digits than its factorization.

4320428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 4320428 is about 2078.5639273306. The cubic root of 4320428 is about 162.8704353863.

The spelling of 4320428 in words is "four million, three hundred twenty thousand, four hundred twenty-eight".