83128829 has 8 divisors (see below), whose sum is σ = 95069568. Its totient is φ = 71204400.

The previous prime is 83128813. The next prime is 83128849. The reversal of 83128829 is 92882138.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83128829 - 2⁴ = 83128813 is a prime.

It is a super-2 number, since 2×83128829² = 13820804421822482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83128849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10184 + ... + 16430.

It is an arithmetic number, because the mean of its divisors is an integer number (11883696).

Almost surely, 2^83128829 is an apocalyptic number.

It is an amenable number.

83128829 is a deficient number, since it is larger than the sum of its proper divisors (11940739).

83128829 is a wasteful number, since it uses less digits than its factorization.

83128829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8155.

The product of its digits is 55296, while the sum is 41.

The square root of 83128829 is about 9117.5012476007. The cubic root of 83128829 is about 436.4326377087.

The spelling of 83128829 in words is "eighty-three million, one hundred twenty-eight thousand, eight hundred twenty-nine".