85283890 has 32 divisors (see below), whose sum is σ = 160671600. Its totient is φ = 32557824.

The previous prime is 85283873. The next prime is 85283899. The reversal of 85283890 is 9838258.

It can be written as a sum of positive squares in 8 ways, for example, as 38675961 + 46607929 = 6219^2 + 6827^2 .

It is not an unprimeable number, because it can be changed into a prime (85283899) 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 15 ways as a sum of consecutive naturals, for example, 17436 + ... + 21784.

Almost surely, 2^85283890 is an apocalyptic number.

85283890 is a deficient number, since it is larger than the sum of its proper divisors (75387710).

85283890 is a wasteful number, since it uses less digits than its factorization.

85283890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4446.

The product of its (nonzero) digits is 138240, while the sum is 43.

The square root of 85283890 is about 9234.9277203452. The cubic root of 85283890 is about 440.1719197322.

The spelling of 85283890 in words is "eighty-five million, two hundred eighty-three thousand, eight hundred ninety".