20534424 has 16 divisors (see below), whose sum is σ = 51336120. Its totient is φ = 6844800.

The previous prime is 20534413. The next prime is 20534429. The reversal of 20534424 is 42443502.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 855601 = 20534424 / (2 + 0 + 5 + 3 + 4 + 4 + 2 + 4).

It is a junction number, because it is equal to n+sod(n) for n = 20534394 and 20534403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20534429) by changing a digit.

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, 427777 + ... + 427824.

Almost surely, 2^20534424 is an apocalyptic number.

20534424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20534424 is an abundant number, since it is smaller than the sum of its proper divisors (30801696).

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

20534424 is a wasteful number, since it uses less digits than its factorization.

20534424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855610 (or 855606 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 24.

The square root of 20534424 is about 4531.4924693747. The cubic root of 20534424 is about 273.8382905721.

Adding to 20534424 its reverse (42443502), we get a palindrome (62977926).

The spelling of 20534424 in words is "twenty million, five hundred thirty-four thousand, four hundred twenty-four".