4387220 has 12 divisors (see below), whose sum is σ = 9213204. Its totient is φ = 1754880.

The previous prime is 4387217. The next prime is 4387223. The reversal of 4387220 is 227834.

4387220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4387217) and next prime (4387223).

It can be written as a sum of positive squares in 2 ways, for example, as 3055504 + 1331716 = 1748^2 + 1154^2 .

It is a super-3 number, since 3×4387220³ (a number of 21 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4387220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4387223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109661 + ... + 109700.

It is an arithmetic number, because the mean of its divisors is an integer number (767767).

Almost surely, 2^4387220 is an apocalyptic number.

It is an amenable number.

4387220 is an abundant number, since it is smaller than the sum of its proper divisors (4825984).

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

4387220 is a wasteful number, since it uses less digits than its factorization.

4387220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219370 (or 219368 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 4387220 is about 2094.5691681107. The cubic root of 4387220 is about 163.7054498779.

The spelling of 4387220 in words is "four million, three hundred eighty-seven thousand, two hundred twenty".