83408540 has 12 divisors (see below), whose sum is σ = 175157976. Its totient is φ = 33363408.

The previous prime is 83408539. The next prime is 83408551. The reversal of 83408540 is 4580438.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 83408497 and 83408506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2085194 + ... + 2085233.

It is an arithmetic number, because the mean of its divisors is an integer number (14596498).

Almost surely, 2^83408540 is an apocalyptic number.

It is an amenable number.

83408540 is an abundant number, since it is smaller than the sum of its proper divisors (91749436).

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

83408540 is a wasteful number, since it uses less digits than its factorization.

83408540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4170436 (or 4170434 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 83408540 is about 9132.8276015701. The cubic root of 83408540 is about 436.9215910095.

Adding to 83408540 its reverse (4580438), we get a palindrome (87988978).

The spelling of 83408540 in words is "eighty-three million, four hundred eight thousand, five hundred forty".