20124466 has 4 divisors (see below), whose sum is σ = 30186702. Its totient is φ = 10062232.

The previous prime is 20124457. The next prime is 20124479. The reversal of 20124466 is 66442102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66442102 = 2 ⋅33221051.

It can be written as a sum of positive squares in only one way, i.e., 16040025 + 4084441 = 4005^2 + 2021^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20124466.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 5031115 + ... + 5031118.

Almost surely, 2^20124466 is an apocalyptic number.

20124466 is a deficient number, since it is larger than the sum of its proper divisors (10062236).

20124466 is a wasteful number, since it uses less digits than its factorization.

20124466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10062235.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 20124466 is about 4486.0300935237. The cubic root of 20124466 is about 272.0036854316.

Adding to 20124466 its reverse (66442102), we get a palindrome (86566568).

The spelling of 20124466 in words is "twenty million, one hundred twenty-four thousand, four hundred sixty-six".