86190520 has 64 divisors (see below), whose sum is σ = 211468320. Its totient is φ = 31425024.

The previous prime is 86190491. The next prime is 86190541. The reversal of 86190520 is 2509168.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42162 + ... + 44158.

Almost surely, 2^86190520 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 86190520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105734160).

86190520 is an abundant number, since it is smaller than the sum of its proper divisors (125277800).

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

86190520 is a wasteful number, since it uses less digits than its factorization.

86190520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104 (or 2100 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 86190520 is about 9283.8849626651. The cubic root of 86190520 is about 441.7262078662.

Adding to 86190520 its reverse (2509168), we get a palindrome (88699688).

The spelling of 86190520 in words is "eighty-six million, one hundred ninety thousand, five hundred twenty".