2123496 has 80 divisors (see below), whose sum is σ = 6207300. Its totient is φ = 677376.

The previous prime is 2123491. The next prime is 2123557. The reversal of 2123496 is 6943212.

It can be written as a sum of positive squares in 2 ways, for example, as 1920996 + 202500 = 1386^2 + 450^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2123491) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 18736 + ... + 18848.

2^2123496 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2123496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3103650).

2123496 is an abundant number, since it is smaller than the sum of its proper divisors (4083804).

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

2123496 is a wasteful number, since it uses less digits than its factorization.

2123496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 147 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 2123496 is about 1457.2220146567. Note that the first 3 decimals coincide. The cubic root of 2123496 is about 128.5337413350.

The spelling of 2123496 in words is "two million, one hundred twenty-three thousand, four hundred ninety-six".