85223910 has 32 divisors (see below), whose sum is σ = 205470720. Its totient is φ = 22622688.

The previous prime is 85223881. The next prime is 85223969. The reversal of 85223910 is 1932258.

It is a happy number.

It is a super-2 number, since 2×85223910² = 14526229671376200, which contains 22 as substring.

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 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 in 15 ways as a sum of consecutive naturals, for example, 321 + ... + 13059.

It is an arithmetic number, because the mean of its divisors is an integer number (6420960).

Almost surely, 2^85223910 is an apocalyptic number.

85223910 is an abundant number, since it is smaller than the sum of its proper divisors (120246810).

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

85223910 is a wasteful number, since it uses less digits than its factorization.

85223910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12972.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 85223910 is about 9231.6796954834. The cubic root of 85223910 is about 440.0687048361.

The spelling of 85223910 in words is "eighty-five million, two hundred twenty-three thousand, nine hundred ten".