83840736 has 192 divisors, whose sum is σ = 274337280. Its totient is φ = 21872640.

The previous prime is 83840723. The next prime is 83840737. The reversal of 83840736 is 63704838.

It is a junction number, because it is equal to n+sod(n) for n = 83840694 and 83840703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83840737) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 468295 + ... + 468473.

It is an arithmetic number, because the mean of its divisors is an integer number (1428840).

Almost surely, 2^83840736 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 83840736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137168640).

83840736 is an abundant number, since it is smaller than the sum of its proper divisors (190496544).

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

83840736 is a wasteful number, since it uses less digits than its factorization.

83840736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

The square root of 83840736 is about 9156.4587041061. The cubic root of 83840736 is about 437.6749532662.

The spelling of 83840736 in words is "eighty-three million, eight hundred forty thousand, seven hundred thirty-six".