20066824 has 16 divisors (see below), whose sum is σ = 38141820. Its totient is φ = 9895680.

The previous prime is 20066821. The next prime is 20066857. The reversal of 20066824 is 42866002.

It can be written as a sum of positive squares in 2 ways, for example, as 19201924 + 864900 = 4382^2 + 930^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20066792 and 20066801.

It is not an unprimeable number, because it can be changed into a prime (20066821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16597 + ... + 17764.

Almost surely, 2^20066824 is an apocalyptic number.

It is an amenable number.

20066824 is a deficient number, since it is larger than the sum of its proper divisors (18074996).

20066824 is a wasteful number, since it uses less digits than its factorization.

20066824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34440 (or 34436 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 20066824 is about 4479.6008750780. The cubic root of 20066824 is about 271.7437393242.

The spelling of 20066824 in words is "twenty million, sixty-six thousand, eight hundred twenty-four".