86831838 has 20 divisors (see below), whose sum is σ = 194568000. Its totient is φ = 28943892.

The previous prime is 86831803. The next prime is 86831873. The reversal of 86831838 is 83813868.

It is an interprime number because it is at equal distance from previous prime (86831803) and next prime (86831873).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 86831793 and 86831802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 267838 + ... + 268161.

It is an arithmetic number, because the mean of its divisors is an integer number (9728400).

Almost surely, 2^86831838 is an apocalyptic number.

86831838 is an abundant number, since it is smaller than the sum of its proper divisors (107736162).

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

86831838 is a wasteful number, since it uses less digits than its factorization.

86831838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536013 (or 536004 counting only the distinct ones).

The product of its digits is 221184, while the sum is 45.

The square root of 86831838 is about 9318.3602634798. The cubic root of 86831838 is about 442.8190861405.

The spelling of 86831838 in words is "eighty-six million, eight hundred thirty-one thousand, eight hundred thirty-eight".