2138862 has 32 divisors (see below), whose sum is σ = 4872960. Its totient is φ = 619520.

The previous prime is 2138861. The next prime is 2138867. The reversal of 2138862 is 2688312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 814 + ... + 2222.

It is an arithmetic number, because the mean of its divisors is an integer number (152280).

2^2138862 is an apocalyptic number.

2138862 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2138862, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2436480).

2138862 is an abundant number, since it is smaller than the sum of its proper divisors (2734098).

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

2138862 is a wasteful number, since it uses less digits than its factorization.

2138862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448.

The product of its digits is 4608, while the sum is 30.

The square root of 2138862 is about 1462.4848717166. The cubic root of 2138862 is about 128.8430276238.

It can be divided in two parts, 21 and 38862, that added together give a palindrome (38883).

The spelling of 2138862 in words is "two million, one hundred thirty-eight thousand, eight hundred sixty-two".