4556789820 has 432 divisors, whose sum is σ = 16647531264. Its totient is φ = 1003622400.

The previous prime is 4556789819. The next prime is 4556789827. The reversal of 4556789820 is 289876554.

4556789820 is a `hidden beast` number, since 4 + 556 + 7 + 8 + 9 + 82 + 0 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4556789827) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 11477862 + ... + 11478258.

It is an arithmetic number, because the mean of its divisors is an integer number (38535952).

Almost surely, 2^4556789820 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 4556789820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8323765632).

4556789820 is an abundant number, since it is smaller than the sum of its proper divisors (12090741444).

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

4556789820 is a wasteful number, since it uses less digits than its factorization.

4556789820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 466 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The square root of 4556789820 is about 67503.9985482342. The cubic root of 4556789820 is about 1657.8796438647.

The spelling of 4556789820 in words is "four billion, five hundred fifty-six million, seven hundred eighty-nine thousand, eight hundred twenty".