86216538 has 16 divisors (see below), whose sum is σ = 175007520. Its totient is φ = 28309776.

The previous prime is 86216519. The next prime is 86216539. The reversal of 86216538 is 83561268.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 86216496 and 86216505.

It is not an unprimeable number, because it can be changed into a prime (86216539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106833 + ... + 107636.

It is an arithmetic number, because the mean of its divisors is an integer number (10937970).

Almost surely, 2^86216538 is an apocalyptic number.

86216538 is an abundant number, since it is smaller than the sum of its proper divisors (88790982).

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

86216538 is a wasteful number, since it uses less digits than its factorization.

86216538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214541.

The product of its digits is 69120, while the sum is 39.

The square root of 86216538 is about 9285.2861022157. The cubic root of 86216538 is about 441.7706507904.

The spelling of 86216538 in words is "eighty-six million, two hundred sixteen thousand, five hundred thirty-eight".