20500412 has 12 divisors (see below), whose sum is σ = 36064896. Its totient is φ = 10196160.

The previous prime is 20500397. The next prime is 20500423. The reversal of 20500412 is 21400502.

It is a super-3 number, since 3×20500412³ (a number of 23 digits) contains 333 as substring.

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, 12653 + ... + 14180.

It is an arithmetic number, because the mean of its divisors is an integer number (3005408).

Almost surely, 2^20500412 is an apocalyptic number.

It is an amenable number.

20500412 is a deficient number, since it is larger than the sum of its proper divisors (15564484).

20500412 is a wasteful number, since it uses less digits than its factorization.

20500412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27028 (or 27026 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 20500412 is about 4527.7380666289. The cubic root of 20500412 is about 273.6870171959.

Adding to 20500412 its reverse (21400502), we get a palindrome (41900914).

The spelling of 20500412 in words is "twenty million, five hundred thousand, four hundred twelve".