2123736 has 32 divisors (see below), whose sum is σ = 5365440. Its totient is φ = 700448.

The previous prime is 2123731. The next prime is 2123741. The reversal of 2123736 is 6373212.

It is an interprime number because it is at equal distance from previous prime (2123731) and next prime (2123741).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a d-powerful number, because it can be written as 2⁹ + 1 + 2¹⁷ + 3⁵ + 7⁶ + 3¹³ + 6⁷ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123731) 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, 2155 + ... + 2981.

It is an arithmetic number, because the mean of its divisors is an integer number (167670).

2^2123736 is an apocalyptic number.

It is an amenable number.

2123736 is an abundant number, since it is smaller than the sum of its proper divisors (3241704).

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

2123736 is a wasteful number, since it uses less digits than its factorization.

2123736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943 (or 939 counting only the distinct ones).

The product of its digits is 1512, while the sum is 24.

The square root of 2123736 is about 1457.3043607977. The cubic root of 2123736 is about 128.5385834972.

Adding to 2123736 its reverse (6373212), we get a palindrome (8496948).

The spelling of 2123736 in words is "two million, one hundred twenty-three thousand, seven hundred thirty-six".