85283278 has 4 divisors (see below), whose sum is σ = 127924920. Its totient is φ = 42641638.

The previous prime is 85283257. The next prime is 85283281. The reversal of 85283278 is 87238258.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 21320818 + ... + 21320821.

It is an arithmetic number, because the mean of its divisors is an integer number (31981230).

Almost surely, 2^85283278 is an apocalyptic number.

85283278 is a deficient number, since it is larger than the sum of its proper divisors (42641642).

85283278 is a wasteful number, since it uses less digits than its factorization.

85283278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42641641.

The product of its digits is 215040, while the sum is 43.

The square root of 85283278 is about 9234.8945852132. The cubic root of 85283278 is about 440.1708668337.

It can be divided in two parts, 8 and 5283278, that multiplied together give a palindrome (42266224).

The spelling of 85283278 in words is "eighty-five million, two hundred eighty-three thousand, two hundred seventy-eight".