20253424 has 20 divisors (see below), whose sum is σ = 39444400. Its totient is φ = 10074240.

The previous prime is 20253419. The next prime is 20253433. The reversal of 20253424 is 42435202.

It is a junction number, because it is equal to n+sod(n) for n = 20253395 and 20253404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4 + ... + 6364.

It is an arithmetic number, because the mean of its divisors is an integer number (1972220).

Almost surely, 2^20253424 is an apocalyptic number.

It is an amenable number.

20253424 is a deficient number, since it is larger than the sum of its proper divisors (19190976).

20253424 is a wasteful number, since it uses less digits than its factorization.

20253424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6568 (or 6562 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 20253424 is about 4500.3804283638. The cubic root of 20253424 is about 272.5834505798.

Adding to 20253424 its reverse (42435202), we get a palindrome (62688626).

The spelling of 20253424 in words is "twenty million, two hundred fifty-three thousand, four hundred twenty-four".