83820784 has 10 divisors (see below), whose sum is σ = 162402800. Its totient is φ = 41910384.

The previous prime is 83820773. The next prime is 83820811. The reversal of 83820784 is 48702838.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2619384 + ... + 2619415.

It is an arithmetic number, because the mean of its divisors is an integer number (16240280).

Almost surely, 2^83820784 is an apocalyptic number.

It is an amenable number.

83820784 is a deficient number, since it is larger than the sum of its proper divisors (78582016).

83820784 is a wasteful number, since it uses less digits than its factorization.

83820784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5238807 (or 5238801 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 83820784 is about 9155.3691351032. The cubic root of 83820784 is about 437.6402319446.

The spelling of 83820784 in words is "eighty-three million, eight hundred twenty thousand, seven hundred eighty-four".