8138830 has 16 divisors (see below), whose sum is σ = 16742880. Its totient is φ = 2790432.

The previous prime is 8138807. The next prime is 8138861. The reversal of 8138830 is 388318.

It is a junction number, because it is equal to n+sod(n) for n = 8138792 and 8138801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58065 + ... + 58204.

It is an arithmetic number, because the mean of its divisors is an integer number (1046430).

Almost surely, 2^8138830 is an apocalyptic number.

8138830 is an abundant number, since it is smaller than the sum of its proper divisors (8604050).

8138830 is a wasteful number, since it uses less digits than its factorization.

8138830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116283.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 8138830 is about 2852.8634737751. The cubic root of 8138830 is about 201.1502881688.

It can be divided in two parts, 81388 and 30, that added together give a palindrome (81418).

The spelling of 8138830 in words is "eight million, one hundred thirty-eight thousand, eight hundred thirty".