2138706 has 24 divisors (see below), whose sum is σ = 4674384. Its totient is φ = 706680.

The previous prime is 2138693. The next prime is 2138713. The reversal of 2138706 is 6078312.

It is a self number, because there is not a number n which added to its sum of digits gives 2138706.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1905 + ... + 2811.

It is an arithmetic number, because the mean of its divisors is an integer number (194766).

2^2138706 is an apocalyptic number.

2138706 is an abundant number, since it is smaller than the sum of its proper divisors (2535678).

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

2138706 is a wasteful number, since it uses less digits than its factorization.

2138706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046 (or 1043 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 2138706 is about 1462.4315368591. The cubic root of 2138706 is about 128.8398951167.

The spelling of 2138706 in words is "two million, one hundred thirty-eight thousand, seven hundred six".