8138870 has 16 divisors (see below), whose sum is σ = 14702688. Its totient is φ = 3243840.

The previous prime is 8138863. The next prime is 8138881. The reversal of 8138870 is 788318.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 8138870.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1802 + ... + 4418.

It is an arithmetic number, because the mean of its divisors is an integer number (918918).

Almost surely, 2^8138870 is an apocalyptic number.

8138870 is a deficient number, since it is larger than the sum of its proper divisors (6563818).

8138870 is a wasteful number, since it uses less digits than its factorization.

8138870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2935.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 8138870 is about 2852.8704842667. The cubic root of 8138870 is about 201.1506177001.

The spelling of 8138870 in words is "eight million, one hundred thirty-eight thousand, eight hundred seventy".