85280856 has 64 divisors (see below), whose sum is σ = 220877280. Its totient is φ = 27417600.

The previous prime is 85280813. The next prime is 85280887. The reversal of 85280856 is 65808258.

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, 121306 + ... + 122006.

Almost surely, 2^85280856 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 85280856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110438640).

85280856 is an abundant number, since it is smaller than the sum of its proper divisors (135596424).

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

85280856 is a wasteful number, since it uses less digits than its factorization.

85280856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 884 (or 880 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 42.

The square root of 85280856 is about 9234.7634512206. The cubic root of 85280856 is about 440.1666999209.

The spelling of 85280856 in words is "eighty-five million, two hundred eighty thousand, eight hundred fifty-six".