83820028 has 24 divisors (see below), whose sum is σ = 148862000. Its totient is φ = 41292288.

The previous prime is 83819993. The next prime is 83820049. The reversal of 83820028 is 82002838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135103 + ... + 135721.

Almost surely, 2^83820028 is an apocalyptic number.

It is an amenable number.

83820028 is a deficient number, since it is larger than the sum of its proper divisors (65041972).

83820028 is a wasteful number, since it uses less digits than its factorization.

83820028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069 (or 1067 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 83820028 is about 9155.3278477617. The cubic root of 83820028 is about 437.6389162128.

The spelling of 83820028 in words is "eighty-three million, eight hundred twenty thousand, twenty-eight".