80785100 has 54 divisors (see below), whose sum is σ = 191948652. Its totient is φ = 29268000.

The previous prime is 80785099. The next prime is 80785147. The reversal of 80785100 is 158708.

It is a happy number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 297965 + ... + 298235.

Almost surely, 2^80785100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80785100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95974326).

80785100 is an abundant number, since it is smaller than the sum of its proper divisors (111163552).

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

80785100 is a wasteful number, since it uses less digits than its factorization.

80785100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 29.

The square root of 80785100 is about 8988.0531818631. The cubic root of 80785100 is about 432.2918909242.

The spelling of 80785100 in words is "eighty million, seven hundred eighty-five thousand, one hundred".