20124412 has 48 divisors (see below), whose sum is σ = 44255232. Its totient is φ = 7778880.

The previous prime is 20124409. The next prime is 20124437. The reversal of 20124412 is 21442102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68538 + ... + 68830.

It is an arithmetic number, because the mean of its divisors is an integer number (921984).

Almost surely, 2^20124412 is an apocalyptic number.

20124412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20124412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22127616).

20124412 is an abundant number, since it is smaller than the sum of its proper divisors (24130820).

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

20124412 is a wasteful number, since it uses less digits than its factorization.

20124412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538 (or 536 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 20124412 is about 4486.0240748351. The cubic root of 20124412 is about 272.0034421421.

Adding to 20124412 its reverse (21442102), we get a palindrome (41566514).

The spelling of 20124412 in words is "twenty million, one hundred twenty-four thousand, four hundred twelve".