83080540 has 72 divisors (see below), whose sum is σ = 189719712. Its totient is φ = 30533760.

The previous prime is 83080511. The next prime is 83080549. The reversal of 83080540 is 4508038.

It is a super-2 number, since 2×83080540² = 13804752253383200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 83080499 and 83080508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83080549) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 266985 + ... + 267295.

It is an arithmetic number, because the mean of its divisors is an integer number (2634996).

Almost surely, 2^83080540 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 83080540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94859856).

83080540 is an abundant number, since it is smaller than the sum of its proper divisors (106639172).

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

83080540 is a wasteful number, since it uses less digits than its factorization.

83080540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 374 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 83080540 is about 9114.8527141145. The cubic root of 83080540 is about 436.3481143732.

Adding to 83080540 its reverse (4508038), we get a palindrome (87588578).

The spelling of 83080540 in words is "eighty-three million, eighty thousand, five hundred forty".