83530428 has 12 divisors (see below), whose sum is σ = 194904360. Its totient is φ = 27843472.

The previous prime is 83530417. The next prime is 83530429. The reversal of 83530428 is 82403538.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83530429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3480423 + ... + 3480446.

It is an arithmetic number, because the mean of its divisors is an integer number (16242030).

Almost surely, 2^83530428 is an apocalyptic number.

It is an amenable number.

83530428 is an abundant number, since it is smaller than the sum of its proper divisors (111373932).

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

83530428 is a wasteful number, since it uses less digits than its factorization.

83530428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6960876 (or 6960874 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 83530428 is about 9139.4982356801. The cubic root of 83530428 is about 437.1343173423.

The spelling of 83530428 in words is "eighty-three million, five hundred thirty thousand, four hundred twenty-eight".