85281420 has 48 divisors (see below), whose sum is σ = 272901888. Its totient is φ = 19492800.

The previous prime is 85281409. The next prime is 85281433. The reversal of 85281420 is 2418258.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 101106 + ... + 101945.

It is an arithmetic number, because the mean of its divisors is an integer number (5685456).

Almost surely, 2^85281420 is an apocalyptic number.

It is an amenable number.

85281420 is an abundant number, since it is smaller than the sum of its proper divisors (187620468).

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

85281420 is a wasteful number, since it uses less digits than its factorization.

85281420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203070 (or 203068 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 30.

The square root of 85281420 is about 9234.7939879566. The cubic root of 85281420 is about 440.1676702578.

Adding to 85281420 its reverse (2418258), we get a palindrome (87699678).

The spelling of 85281420 in words is "eighty-five million, two hundred eighty-one thousand, four hundred twenty".