20653124 has 12 divisors (see below), whose sum is σ = 36176700. Its totient is φ = 10316928.

The previous prime is 20653117. The next prime is 20653151. The reversal of 20653124 is 42135602.

It can be written as a sum of positive squares in 2 ways, for example, as 16974400 + 3678724 = 4120^2 + 1918^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20653124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4832 + ... + 8040.

It is an arithmetic number, because the mean of its divisors is an integer number (3014725).

Almost surely, 2^20653124 is an apocalyptic number.

It is an amenable number.

20653124 is a deficient number, since it is larger than the sum of its proper divisors (15523576).

20653124 is a wasteful number, since it uses less digits than its factorization.

20653124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4822 (or 4820 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 20653124 is about 4544.5708268218. The cubic root of 20653124 is about 274.3649212695.

Adding to 20653124 its reverse (42135602), we get a palindrome (62788726).

The spelling of 20653124 in words is "twenty million, six hundred fifty-three thousand, one hundred twenty-four".