85280070 has 64 divisors (see below), whose sum is σ = 213497856. Its totient is φ = 21776640.

The previous prime is 85280033. The next prime is 85280071. The reversal of 85280070 is 7008258.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85280071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 99082 + ... + 99938.

It is an arithmetic number, because the mean of its divisors is an integer number (3335904).

Almost surely, 2^85280070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85280070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106748928).

85280070 is an abundant number, since it is smaller than the sum of its proper divisors (128217786).

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

85280070 is a wasteful number, since it uses less digits than its factorization.

85280070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005.

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 85280070 is about 9234.7208945371. The cubic root of 85280070 is about 440.1653476358.

The spelling of 85280070 in words is "eighty-five million, two hundred eighty thousand, seventy".