4356820 has 36 divisors (see below), whose sum is σ = 9914940. Its totient is φ = 1607424.

The previous prime is 4356791. The next prime is 4356823. The reversal of 4356820 is 286534.

It can be written as a sum of positive squares in 6 ways, for example, as 364816 + 3992004 = 604^2 + 1998^2 .

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4356823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2736 + ... + 4024.

It is an arithmetic number, because the mean of its divisors is an integer number (275415).

Almost surely, 2^4356820 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 4356820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4957470).

4356820 is an abundant number, since it is smaller than the sum of its proper divisors (5558120).

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

4356820 is a wasteful number, since it uses less digits than its factorization.

4356820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1324 (or 1309 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 4356820 is about 2087.2996909883. The cubic root of 4356820 is about 163.3264562795.

The spelling of 4356820 in words is "four million, three hundred fifty-six thousand, eight hundred twenty".