83440120 has 16 divisors (see below), whose sum is σ = 187740360. Its totient is φ = 33376032.

The previous prime is 83440117. The next prime is 83440121. The reversal of 83440120 is 2104438.

It is a super-2 number, since 2×83440120² = 13924507251228800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83440091 and 83440100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83440121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1042962 + ... + 1043041.

Almost surely, 2^83440120 is an apocalyptic number.

It is an amenable number.

83440120 is an abundant number, since it is smaller than the sum of its proper divisors (104300240).

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

83440120 is a wasteful number, since it uses less digits than its factorization.

83440120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2086014 (or 2086010 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 83440120 is about 9134.5563658012. The cubic root of 83440120 is about 436.9767262224.

Adding to 83440120 its reverse (2104438), we get a palindrome (85544558).

The spelling of 83440120 in words is "eighty-three million, four hundred forty thousand, one hundred twenty".