2138996 has 12 divisors (see below), whose sum is σ = 3753540. Its totient is φ = 1066560.

The previous prime is 2138989. The next prime is 2138999. The reversal of 2138996 is 6998312.

It can be written as a sum of positive squares in 2 ways, for example, as 1795600 + 343396 = 1340^2 + 586^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2240 + ... + 3048.

It is an arithmetic number, because the mean of its divisors is an integer number (312795).

2^2138996 is an apocalyptic number.

It is an amenable number.

2138996 is a deficient number, since it is larger than the sum of its proper divisors (1614544).

2138996 is a wasteful number, since it uses less digits than its factorization.

2138996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474 (or 1472 counting only the distinct ones).

The product of its digits is 23328, while the sum is 38.

The square root of 2138996 is about 1462.5306834388. The cubic root of 2138996 is about 128.8457182454.

The spelling of 2138996 in words is "two million, one hundred thirty-eight thousand, nine hundred ninety-six".