83291128 has 16 divisors (see below), whose sum is σ = 156293280. Its totient is φ = 41612928.

The previous prime is 83291113. The next prime is 83291137. The reversal of 83291128 is 82119238.

It is a junction number, because it is equal to n+sod(n) for n = 83291093 and 83291102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9376 + ... + 15952.

It is an arithmetic number, because the mean of its divisors is an integer number (9768330).

Almost surely, 2^83291128 is an apocalyptic number.

It is an amenable number.

83291128 is a deficient number, since it is larger than the sum of its proper divisors (73002152).

83291128 is a wasteful number, since it uses less digits than its factorization.

83291128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8166 (or 8162 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 83291128 is about 9126.3973176714. The cubic root of 83291128 is about 436.7164804064.

The spelling of 83291128 in words is "eighty-three million, two hundred ninety-one thousand, one hundred twenty-eight".