867306138 has 32 divisors (see below), whose sum is σ = 1764839616. Its totient is φ = 284093568.

The previous prime is 867306131. The next prime is 867306163. The reversal of 867306138 is 831603768.

It is a self number, because there is not a number n which added to its sum of digits gives 867306138.

It is not an unprimeable number, because it can be changed into a prime (867306131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120456 + ... + 127452.

It is an arithmetic number, because the mean of its divisors is an integer number (55151238).

Almost surely, 2^867306138 is an apocalyptic number.

867306138 is an abundant number, since it is smaller than the sum of its proper divisors (897533478).

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

867306138 is a wasteful number, since it uses less digits than its factorization.

867306138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7358.

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 867306138 is about 29450.0617656398. The cubic root of 867306138 is about 953.6539383596.

The spelling of 867306138 in words is "eight hundred sixty-seven million, three hundred six thousand, one hundred thirty-eight".