86020844 has 72 divisors (see below), whose sum is σ = 192567648. Its totient is φ = 32739840.

The previous prime is 86020817. The next prime is 86020849. The reversal of 86020844 is 44802068.

It is a self number, because there is not a number n which added to its sum of digits gives 86020844.

It is not an unprimeable number, because it can be changed into a prime (86020849) 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 23 ways as a sum of consecutive naturals, for example, 305984 + ... + 306264.

Almost surely, 2^86020844 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 86020844, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96283824).

86020844 is an abundant number, since it is smaller than the sum of its proper divisors (106546804).

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

86020844 is a wasteful number, since it uses less digits than its factorization.

86020844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 86020844 is about 9274.7422605698. The cubic root of 86020844 is about 441.4361544176.

The spelling of 86020844 in words is "eighty-six million, twenty thousand, eight hundred forty-four".