4321920 has 64 divisors (see below), whose sum is σ = 13782240. Its totient is φ = 1152000.

The previous prime is 4321901. The next prime is 4321931. The reversal of 4321920 is 291234.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-3 number, since 3×4321920³ (a number of 21 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 795 + ... + 3045.

Almost surely, 2^4321920 is an apocalyptic number.

4321920 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 4321920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6891120).

4321920 is an abundant number, since it is smaller than the sum of its proper divisors (9460320).

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

4321920 is a wasteful number, since it uses less digits than its factorization.

4321920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2273 (or 2261 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 4321920 is about 2078.9227979894. The cubic root of 4321920 is about 162.8891815786.

The spelling of 4321920 in words is "four million, three hundred twenty-one thousand, nine hundred twenty".