85390284 has 48 divisors (see below), whose sum is σ = 228614400. Its totient is φ = 24300096.

The previous prime is 85390267. The next prime is 85390307. The reversal of 85390284 is 48209358.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20707 + ... + 24485.

It is an arithmetic number, because the mean of its divisors is an integer number (4762800).

Almost surely, 2^85390284 is an apocalyptic number.

85390284 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

85390284 is an abundant number, since it is smaller than the sum of its proper divisors (143224116).

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

85390284 is a wasteful number, since it uses less digits than its factorization.

85390284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4062 (or 4060 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 85390284 is about 9240.6863381461. The cubic root of 85390284 is about 440.3548858630.

The spelling of 85390284 in words is "eighty-five million, three hundred ninety thousand, two hundred eighty-four".