83804940 has 72 divisors (see below), whose sum is σ = 258039600. Its totient is φ = 22011264.

The previous prime is 83804927. The next prime is 83804947. The reversal of 83804940 is 4940838.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 83804895 and 83804904.

It is not an unprimeable number, because it can be changed into a prime (83804947) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8586 + ... + 15534.

Almost surely, 2^83804940 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 83804940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129019800).

83804940 is an abundant number, since it is smaller than the sum of its proper divisors (174234660).

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

83804940 is a wasteful number, since it uses less digits than its factorization.

83804940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7031 (or 7026 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 83804940 is about 9154.5038096010. The cubic root of 83804940 is about 437.6126556147.

The spelling of 83804940 in words is "eighty-three million, eight hundred four thousand, nine hundred forty".