2138626 has 16 divisors (see below), whose sum is σ = 3691584. Its totient is φ = 910224.

The previous prime is 2138623. The next prime is 2138629. The reversal of 2138626 is 6268312.

It is an interprime number because it is at equal distance from previous prime (2138623) and next prime (2138629).

It is a d-powerful number, because it can be written as 2¹³ + 1 + 3⁴ + 8⁵ + 6³ + 2²¹ + 6³ .

It is a junction number, because it is equal to n+sod(n) for n = 2138594 and 2138603.

It is not an unprimeable number, because it can be changed into a prime (2138623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1981 + ... + 2863.

It is an arithmetic number, because the mean of its divisors is an integer number (230724).

2^2138626 is an apocalyptic number.

2138626 is a deficient number, since it is larger than the sum of its proper divisors (1552958).

2138626 is a wasteful number, since it uses less digits than its factorization.

2138626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065.

The product of its digits is 3456, while the sum is 28.

The square root of 2138626 is about 1462.4041848955. The cubic root of 2138626 is about 128.8382886437.

It can be divided in two parts, 21386 and 26, that added together give a palindrome (21412).

The spelling of 2138626 in words is "two million, one hundred thirty-eight thousand, six hundred twenty-six".