20533922 has 4 divisors (see below), whose sum is σ = 30800886. Its totient is φ = 10266960.

The previous prime is 20533897. The next prime is 20533939. The reversal of 20533922 is 22933502.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22933502 = 2 ⋅11466751.

It can be written as a sum of positive squares in only one way, i.e., 15689521 + 4844401 = 3961^2 + 2201^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20533891 and 20533900.

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, 5133479 + ... + 5133482.

Almost surely, 2^20533922 is an apocalyptic number.

20533922 is a deficient number, since it is larger than the sum of its proper divisors (10266964).

20533922 is a wasteful number, since it uses less digits than its factorization.

20533922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10266963.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 20533922 is about 4531.4370788967. The cubic root of 20533922 is about 273.8360590682.

The spelling of 20533922 in words is "twenty million, five hundred thirty-three thousand, nine hundred twenty-two".