4215620 has 48 divisors (see below), whose sum is σ = 9335088. Its totient is φ = 1597440.

The previous prime is 4215619. The next prime is 4215641. The reversal of 4215620 is 265124.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 287296 + 3928324 = 536^2 + 1982^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 4215592 and 4215601.

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 15 ways as a sum of consecutive naturals, for example, 43412 + ... + 43508.

It is an arithmetic number, because the mean of its divisors is an integer number (194481).

Almost surely, 2^4215620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4215620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4667544).

4215620 is an abundant number, since it is smaller than the sum of its proper divisors (5119468).

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

4215620 is a wasteful number, since it uses less digits than its factorization.

4215620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 4215620 is about 2053.1975063301. The cubic root of 4215620 is about 161.5426310919.

The spelling of 4215620 in words is "four million, two hundred fifteen thousand, six hundred twenty".