85830780 has 48 divisors (see below), whose sum is σ = 274659840. Its totient is φ = 19618368.

The previous prime is 85830769. The next prime is 85830793. The reversal of 85830780 is 8703858.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101760 + ... + 102599.

It is an arithmetic number, because the mean of its divisors is an integer number (5722080).

Almost surely, 2^85830780 is an apocalyptic number.

It is an amenable number.

85830780 is an abundant number, since it is smaller than the sum of its proper divisors (188829060).

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

85830780 is a wasteful number, since it uses less digits than its factorization.

85830780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204378 (or 204376 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 85830780 is about 9264.4902720009. The cubic root of 85830780 is about 441.1107953271.

The spelling of 85830780 in words is "eighty-five million, eight hundred thirty thousand, seven hundred eighty".