8243120 has 40 divisors (see below), whose sum is σ = 19311264. Its totient is φ = 3272192.

The previous prime is 8243107. The next prime is 8243149. The reversal of 8243120 is 213428.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 8243092 and 8243101.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13052 + ... + 13668.

Almost surely, 2^8243120 is an apocalyptic number.

8243120 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8243120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9655632).

8243120 is an abundant number, since it is smaller than the sum of its proper divisors (11068144).

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

8243120 is a wasteful number, since it uses less digits than its factorization.

8243120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 797 (or 791 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 8243120 is about 2871.0834191991. The cubic root of 8243120 is about 202.0058162558.

Adding to 8243120 its reverse (213428), we get a palindrome (8456548).

The spelling of 8243120 in words is "eight million, two hundred forty-three thousand, one hundred twenty".