8520354780 has 192 divisors, whose sum is σ = 28995563520. Its totient is φ = 1824915456.

The previous prime is 8520354779. The next prime is 8520354793. The reversal of 8520354780 is 874530258.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1703964 + ... + 1708956.

It is an arithmetic number, because the mean of its divisors is an integer number (151018560).

Almost surely, 2^8520354780 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 8520354780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14497781760).

8520354780 is an abundant number, since it is smaller than the sum of its proper divisors (20475208740).

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

8520354780 is a wasteful number, since it uses less digits than its factorization.

8520354780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5268 (or 5266 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The square root of 8520354780 is about 92305.7678587855. The cubic root of 8520354780 is about 2042.4552953136.

The spelling of 8520354780 in words is "eight billion, five hundred twenty million, three hundred fifty-four thousand, seven hundred eighty".