2122624 has 64 divisors (see below), whose sum is σ = 5091840. Its totient is φ = 861696.

The previous prime is 2122619. The next prime is 2122633. The reversal of 2122624 is 4262212.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20557 + ... + 20659.

It is an arithmetic number, because the mean of its divisors is an integer number (79560).

2^2122624 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 2122624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2545920).

2122624 is an abundant number, since it is smaller than the sum of its proper divisors (2969216).

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

2122624 is a wasteful number, since it uses less digits than its factorization.

2122624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 135 counting only the distinct ones).

The product of its digits is 384, while the sum is 19.

The square root of 2122624 is about 1456.9227845016. The cubic root of 2122624 is about 128.5161450743.

Adding to 2122624 its reverse (4262212), we get a palindrome (6384836).

The spelling of 2122624 in words is "two million, one hundred twenty-two thousand, six hundred twenty-four".