4287520 has 48 divisors (see below), whose sum is σ = 10257408. Its totient is φ = 1693440.

The previous prime is 4287511. The next prime is 4287539. The reversal of 4287520 is 257824.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20215 + ... + 20425.

It is an arithmetic number, because the mean of its divisors is an integer number (213696).

Almost surely, 2^4287520 is an apocalyptic number.

4287520 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 4287520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5128704).

4287520 is an abundant number, since it is smaller than the sum of its proper divisors (5969888).

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

4287520 is a wasteful number, since it uses less digits than its factorization.

4287520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 345 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 4287520 is about 2070.6327535321. The cubic root of 4287520 is about 162.4558617795.

The spelling of 4287520 in words is "four million, two hundred eighty-seven thousand, five hundred twenty".