86443828 has 6 divisors (see below), whose sum is σ = 151276706. Its totient is φ = 43221912.

The previous prime is 86443823. The next prime is 86443837. The reversal of 86443828 is 82834468.

It can be written as a sum of positive squares in only one way, i.e., 75829264 + 10614564 = 8708^2 + 3258^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86443823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10805475 + ... + 10805482.

Almost surely, 2^86443828 is an apocalyptic number.

It is an amenable number.

86443828 is a deficient number, since it is larger than the sum of its proper divisors (64832878).

86443828 is a wasteful number, since it uses less digits than its factorization.

86443828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21610961 (or 21610959 counting only the distinct ones).

The product of its digits is 294912, while the sum is 43.

The square root of 86443828 is about 9297.5173030224. The cubic root of 86443828 is about 442.1585189287.

The spelling of 86443828 in words is "eighty-six million, four hundred forty-three thousand, eight hundred twenty-eight".