20012424 has 32 divisors (see below), whose sum is σ = 50505120. Its totient is φ = 6607616.

The previous prime is 20012423. The next prime is 20012441. The reversal of 20012424 is 42421002.

It is a super-2 number, since 2×20012424² = 800994228711552, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20012423) 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 7 ways as a sum of consecutive naturals, for example, 1329 + ... + 6464.

It is an arithmetic number, because the mean of its divisors is an integer number (1578285).

Almost surely, 2^20012424 is an apocalyptic number.

20012424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20012424 is an abundant number, since it is smaller than the sum of its proper divisors (30492696).

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

20012424 is a wasteful number, since it uses less digits than its factorization.

20012424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7909 (or 7905 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 20012424 is about 4473.5247847754. The cubic root of 20012424 is about 271.4979565658.

Adding to 20012424 its reverse (42421002), we get a palindrome (62433426).

The spelling of 20012424 in words is "twenty million, twelve thousand, four hundred twenty-four".