20124550 has 24 divisors (see below), whose sum is σ = 38725200. Its totient is φ = 7771680.

The previous prime is 20124529. The next prime is 20124551. The reversal of 20124550 is 5542102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20124551) 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 11 ways as a sum of consecutive naturals, for example, 5490 + ... + 8389.

It is an arithmetic number, because the mean of its divisors is an integer number (1613550).

Almost surely, 2^20124550 is an apocalyptic number.

20124550 is a deficient number, since it is larger than the sum of its proper divisors (18600650).

20124550 is a wasteful number, since it uses less digits than its factorization.

20124550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13920 (or 13915 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 20124550 is about 4486.0394559121. The cubic root of 20124550 is about 272.0040638810.

Adding to 20124550 its reverse (5542102), we get a palindrome (25666652).

It can be divided in two parts, 201245 and 50, that added together give a triangular number (201295 = T₆₃₄).

The spelling of 20124550 in words is "twenty million, one hundred twenty-four thousand, five hundred fifty".