85783236 has 96 divisors (see below), whose sum is σ = 251209728. Its totient is φ = 22133760.

The previous prime is 85783213. The next prime is 85783277. The reversal of 85783236 is 63238758.

It is a Harshad number since it is a multiple of its sum of digits (42).

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 31 ways as a sum of consecutive naturals, for example, 242836 + ... + 243188.

It is an arithmetic number, because the mean of its divisors is an integer number (2616768).

Almost surely, 2^85783236 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85783236, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125604864).

85783236 is an abundant number, since it is smaller than the sum of its proper divisors (165426492).

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

85783236 is a wasteful number, since it uses less digits than its factorization.

85783236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 641 (or 639 counting only the distinct ones).

The product of its digits is 241920, while the sum is 42.

The square root of 85783236 is about 9261.9239901869. The cubic root of 85783236 is about 441.0293325341.

The spelling of 85783236 in words is "eighty-five million, seven hundred eighty-three thousand, two hundred thirty-six".