83820544 has 34 divisors (see below), whose sum is σ = 167770880. Its totient is φ = 41877504.

The previous prime is 83820521. The next prime is 83820563. The reversal of 83820544 is 44502838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64897 + ... + 66175.

Almost surely, 2^83820544 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 83820544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83885440).

83820544 is an abundant number, since it is smaller than the sum of its proper divisors (83950336).

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

83820544 is an frugal number, since it uses more digits than its factorization.

83820544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1311 (or 1281 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 83820544 is about 9155.3560280308. The cubic root of 83820544 is about 437.6398142528.

The spelling of 83820544 in words is "eighty-three million, eight hundred twenty thousand, five hundred forty-four".