8564492120 has 64 divisors (see below), whose sum is σ = 19812388320. Its totient is φ = 3329593344.

The previous prime is 8564492119. The next prime is 8564492149. The reversal of 8564492120 is 212944658.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1659464 + ... + 1664616.

Almost surely, 2^8564492120 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 8564492120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9906194160).

8564492120 is an abundant number, since it is smaller than the sum of its proper divisors (11247896200).

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

8564492120 is a wasteful number, since it uses less digits than its factorization.

8564492120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6324 (or 6320 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 8564492120 is about 92544.5412760796. The cubic root of 8564492120 is about 2045.9760143985.

The spelling of 8564492120 in words is "eight billion, five hundred sixty-four million, four hundred ninety-two thousand, one hundred twenty".