83330840 has 64 divisors (see below), whose sum is σ = 199454400. Its totient is φ = 31263232.

The previous prime is 83330839. The next prime is 83330843. The reversal of 83330840 is 4803338.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83330843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47906 + ... + 49614.

It is an arithmetic number, because the mean of its divisors is an integer number (3116475).

Almost surely, 2^83330840 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 83330840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99727200).

83330840 is an abundant number, since it is smaller than the sum of its proper divisors (116123560).

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

83330840 is a wasteful number, since it uses less digits than its factorization.

83330840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796 (or 1792 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 83330840 is about 9128.5727252402. The cubic root of 83330840 is about 436.7858760701.

The spelling of 83330840 in words is "eighty-three million, three hundred thirty thousand, eight hundred forty".