4281620 has 72 divisors (see below), whose sum is σ = 11117736. Its totient is φ = 1376256.

The previous prime is 4281619. The next prime is 4281643. The reversal of 4281620 is 261824.

4281620 = T₃₈₄ + T₃₈₅ + ... + T₄₃₄.

4281620 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 4 ways, for example, as 2202256 + 2079364 = 1484^2 + 1442^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16532 + ... + 16788.

It is an arithmetic number, because the mean of its divisors is an integer number (154413).

Almost surely, 2^4281620 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 4281620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5558868).

4281620 is an abundant number, since it is smaller than the sum of its proper divisors (6836116).

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

4281620 is a wasteful number, since it uses less digits than its factorization.

4281620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297 (or 288 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 4281620 is about 2069.2075777940. The cubic root of 4281620 is about 162.3813097793.

It can be divided in two parts, 428 and 1620, that added together give a 11-th power (2048 = 2¹¹).

The spelling of 4281620 in words is "four million, two hundred eighty-one thousand, six hundred twenty".