8538992 has 80 divisors (see below), whose sum is σ = 21427200. Its totient is φ = 3198720.

The previous prime is 8538991. The next prime is 8538997. The reversal of 8538992 is 2998358.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a d-powerful number, because it can be written as 8⁵ + 5⁷ + 3⁸ + 8⁵ + 9² + 9² + 2²³ .

Its product of digits (155520) is a multiple of the sum of its prime divisors (288).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8538991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35609 + ... + 35847.

It is an arithmetic number, because the mean of its divisors is an integer number (267840).

Almost surely, 2^8538992 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 8538992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10713600).

8538992 is an abundant number, since it is smaller than the sum of its proper divisors (12888208).

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

8538992 is a wasteful number, since it uses less digits than its factorization.

8538992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 288 counting only the distinct ones).

The product of its digits is 155520, while the sum is 44.

The square root of 8538992 is about 2922.1553689015. The cubic root of 8538992 is about 204.3943416747.

The spelling of 8538992 in words is "eight million, five hundred thirty-eight thousand, nine hundred ninety-two".