4218720 has 192 divisors, whose sum is σ = 15676416. Its totient is φ = 942080.

The previous prime is 4218713. The next prime is 4218733. The reversal of 4218720 is 278124.

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

It is a congruent number.

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, 89737 + ... + 89783.

It is an arithmetic number, because the mean of its divisors is an integer number (81648).

Almost surely, 2^4218720 is an apocalyptic number.

4218720 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 4218720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7838208).

4218720 is an abundant number, since it is smaller than the sum of its proper divisors (11457696).

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

4218720 is a wasteful number, since it uses less digits than its factorization.

4218720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93 (or 85 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 4218720 is about 2053.9522876640. The cubic root of 4218720 is about 161.5822187409.

The spelling of 4218720 in words is "four million, two hundred eighteen thousand, seven hundred twenty".