83816540 has 24 divisors (see below), whose sum is σ = 176278032. Its totient is φ = 33476480.

The previous prime is 83816539. The next prime is 83816563. The reversal of 83816540 is 4561838.

It is a self number, because there is not a number n which added to its sum of digits gives 83816540.

It is a congruent number.

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, 12467 + ... + 17973.

It is an arithmetic number, because the mean of its divisors is an integer number (7344918).

Almost surely, 2^83816540 is an apocalyptic number.

It is an amenable number.

83816540 is an abundant number, since it is smaller than the sum of its proper divisors (92461492).

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

83816540 is a wasteful number, since it uses less digits than its factorization.

83816540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6277 (or 6275 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 83816540 is about 9155.1373556053. The cubic root of 83816540 is about 437.6328456441.

The spelling of 83816540 in words is "eighty-three million, eight hundred sixteen thousand, five hundred forty".