2138830 has 16 divisors (see below), whose sum is σ = 4052880. Its totient is φ = 810432.

The previous prime is 2138813. The next prime is 2138831. The reversal of 2138830 is 388312.

It is a junction number, because it is equal to n+sod(n) for n = 2138795 and 2138804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5439 + ... + 5818.

It is an arithmetic number, because the mean of its divisors is an integer number (253305).

2^2138830 is an apocalyptic number.

2138830 is a deficient number, since it is larger than the sum of its proper divisors (1914050).

2138830 is a wasteful number, since it uses less digits than its factorization.

2138830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11283.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 2138830 is about 1462.4739313916. The cubic root of 2138830 is about 128.8423850706.

The spelling of 2138830 in words is "two million, one hundred thirty-eight thousand, eight hundred thirty".