4321280 has 52 divisors (see below), whose sum is σ = 10418952. Its totient is φ = 1720320.

The previous prime is 4321259. The next prime is 4321327. The reversal of 4321280 is 821234.

4321280 is nontrivially palindromic in base 15.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20375 + ... + 20585.

Almost surely, 2^4321280 is an apocalyptic number.

4321280 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4321280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5209476).

4321280 is an abundant number, since it is smaller than the sum of its proper divisors (6097672).

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

4321280 is an equidigital number, since it uses as much as digits as its factorization.

4321280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 218 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4321280 is about 2078.7688664207. The cubic root of 4321280 is about 162.8811408450.

The spelling of 4321280 in words is "four million, three hundred twenty-one thousand, two hundred eighty".