85281012 has 30 divisors (see below), whose sum is σ = 222942258. Its totient is φ = 28426896.

The previous prime is 85280977. The next prime is 85281059. The reversal of 85281012 is 21018258.

It can be written as a sum of positive squares in only one way, i.e., 78747876 + 6533136 = 8874^2 + 2556^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 131283 + ... + 131930.

Almost surely, 2^85281012 is an apocalyptic number.

It is an amenable number.

85281012 is an abundant number, since it is smaller than the sum of its proper divisors (137661246).

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

85281012 is a wasteful number, since it uses less digits than its factorization.

85281012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263229 (or 263218 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 85281012 is about 9234.7718975620. The cubic root of 85281012 is about 440.1669683124.

The spelling of 85281012 in words is "eighty-five million, two hundred eighty-one thousand, twelve".