8623489020 has 192 divisors, whose sum is σ = 26189412480. Its totient is φ = 2112028672.

The previous prime is 8623489001. The next prime is 8623489033. The reversal of 8623489020 is 209843268.

8623489020 = 5572² + 5573² + ... + 5836².

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, 14541844 + ... + 14542436.

It is an arithmetic number, because the mean of its divisors is an integer number (136403190).

Almost surely, 2^8623489020 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 8623489020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13094706240).

8623489020 is an abundant number, since it is smaller than the sum of its proper divisors (17565923460).

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

8623489020 is a wasteful number, since it uses less digits than its factorization.

8623489020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944 (or 942 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 8623489020 is about 92862.7429058608. The cubic root of 8623489020 is about 2050.6632016430.

The spelling of 8623489020 in words is "eight billion, six hundred twenty-three million, four hundred eighty-nine thousand, twenty".