83408856 has 64 divisors (see below), whose sum is σ = 221771520. Its totient is φ = 26083200.

The previous prime is 83408837. The next prime is 83408861. The reversal of 83408856 is 65880438.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27831 + ... + 30681.

It is an arithmetic number, because the mean of its divisors is an integer number (3465180).

Almost surely, 2^83408856 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 83408856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110885760).

83408856 is an abundant number, since it is smaller than the sum of its proper divisors (138362664).

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

83408856 is a wasteful number, since it uses less digits than its factorization.

83408856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936 (or 2932 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 83408856 is about 9132.8449017817. The cubic root of 83408856 is about 436.9221427798.

The spelling of 83408856 in words is "eighty-three million, four hundred eight thousand, eight hundred fifty-six".