4305840 has 160 divisors (see below), whose sum is σ = 16713216. Its totient is φ = 890880.

The previous prime is 4305823. The next prime is 4305863. The reversal of 4305840 is 485034.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 4305840.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18364 + ... + 18596.

Almost surely, 2^4305840 is an apocalyptic number.

4305840 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 4305840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8356608).

4305840 is an abundant number, since it is smaller than the sum of its proper divisors (12407376).

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

4305840 is a wasteful number, since it uses less digits than its factorization.

4305840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 261 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 4305840 is about 2075.0518065822. The cubic root of 4305840 is about 162.6869170645.

The spelling of 4305840 in words is "four million, three hundred five thousand, eight hundred forty".