85828780 has 24 divisors (see below), whose sum is σ = 181898640. Its totient is φ = 34015680.

The previous prime is 85828751. The next prime is 85828807. The reversal of 85828780 is 8782858.

It is a self number, because there is not a number n which added to its sum of digits gives 85828780.

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 7 ways as a sum of consecutive naturals, for example, 17506 + ... + 21865.

It is an arithmetic number, because the mean of its divisors is an integer number (7579110).

Almost surely, 2^85828780 is an apocalyptic number.

It is an amenable number.

85828780 is an abundant number, since it is smaller than the sum of its proper divisors (96069860).

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

85828780 is a wasteful number, since it uses less digits than its factorization.

85828780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39489 (or 39487 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 46.

The square root of 85828780 is about 9264.3823323522. The cubic root of 85828780 is about 441.1073690953.

The spelling of 85828780 in words is "eighty-five million, eight hundred twenty-eight thousand, seven hundred eighty".