543446820 has 240 divisors, whose sum is σ = 2063698560. Its totient is φ = 116868096.

The previous prime is 543446809. The next prime is 543446867. The reversal of 543446820 is 28644345.

It is a super-2 number, since 2×543446820² = 590668892336224800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 79 ways as a sum of consecutive naturals, for example, 191371 + ... + 194189.

It is an arithmetic number, because the mean of its divisors is an integer number (8598744).

Almost surely, 2^543446820 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 543446820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1031849280).

543446820 is an abundant number, since it is smaller than the sum of its proper divisors (1520251740).

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

543446820 is a wasteful number, since it uses less digits than its factorization.

543446820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2864 (or 2853 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The square root of 543446820 is about 23311.9458647278. The cubic root of 543446820 is about 816.0542243378.

The spelling of 543446820 in words is "five hundred forty-three million, four hundred forty-six thousand, eight hundred twenty".