83503780 has 12 divisors (see below), whose sum is σ = 175357980. Its totient is φ = 33401504.

The previous prime is 83503753. The next prime is 83503781. The reversal of 83503780 is 8730538.

It can be written as a sum of positive squares in 2 ways, for example, as 58583716 + 24920064 = 7654^2 + 4992^2 .

It is not an unprimeable number, because it can be changed into a prime (83503781) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 2087575 + ... + 2087614.

It is an arithmetic number, because the mean of its divisors is an integer number (14613165).

Almost surely, 2^83503780 is an apocalyptic number.

It is an amenable number.

83503780 is an abundant number, since it is smaller than the sum of its proper divisors (91854200).

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

83503780 is a wasteful number, since it uses less digits than its factorization.

83503780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4175198 (or 4175196 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 83503780 is about 9138.0402713054. The cubic root of 83503780 is about 437.0878273206.

The spelling of 83503780 in words is "eighty-three million, five hundred three thousand, seven hundred eighty".