85234820 has 36 divisors (see below), whose sum is σ = 196750092. Its totient is φ = 30993600.

The previous prime is 85234813. The next prime is 85234823. The reversal of 85234820 is 2843258.

It can be written as a sum of positive squares in 2 ways, for example, as 58277956 + 26956864 = 7634^2 + 5192^2 .

It is not an unprimeable number, because it can be changed into a prime (85234823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15191 + ... + 20030.

Almost surely, 2^85234820 is an apocalyptic number.

It is an amenable number.

85234820 is an abundant number, since it is smaller than the sum of its proper divisors (111515272).

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

85234820 is a wasteful number, since it uses less digits than its factorization.

85234820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35252 (or 35239 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 85234820 is about 9232.2705766241. The cubic root of 85234820 is about 440.0874826052.

The spelling of 85234820 in words is "eighty-five million, two hundred thirty-four thousand, eight hundred twenty".