20553412 has 12 divisors (see below), whose sum is σ = 39238416. Its totient is φ = 9342440.

The previous prime is 20553361. The next prime is 20553433. The reversal of 20553412 is 21435502.

It is a Harshad number since it is a multiple of its sum of digits (22).

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 3 ways as a sum of consecutive naturals, for example, 233518 + ... + 233605.

It is an arithmetic number, because the mean of its divisors is an integer number (3269868).

Almost surely, 2^20553412 is an apocalyptic number.

20553412 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20553412 is a deficient number, since it is larger than the sum of its proper divisors (18685004).

20553412 is a wasteful number, since it uses less digits than its factorization.

20553412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467138 (or 467136 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 20553412 is about 4533.5871007404. The cubic root of 20553412 is about 273.9226698498.

Adding to 20553412 its reverse (21435502), we get a palindrome (41988914).

The spelling of 20553412 in words is "twenty million, five hundred fifty-three thousand, four hundred twelve".