20533073 has 16 divisors (see below), whose sum is σ = 23362560. Its totient is φ = 17875200.

The previous prime is 20533063. The next prime is 20533109. The reversal of 20533073 is 37033502.

It is a cyclic number.

It is not a de Polignac number, because 20533073 - 2¹⁰ = 20532049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20533063) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 60761 + ... + 61097.

It is an arithmetic number, because the mean of its divisors is an integer number (1460160).

Almost surely, 2^20533073 is an apocalyptic number.

It is an amenable number.

20533073 is a deficient number, since it is larger than the sum of its proper divisors (2829487).

20533073 is a wasteful number, since it uses less digits than its factorization.

20533073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568.

The product of its (nonzero) digits is 1890, while the sum is 23.

The square root of 20533073 is about 4531.3433990374. The cubic root of 20533073 is about 273.8322849878.

Adding to 20533073 its reverse (37033502), we get a palindrome (57566575).

The spelling of 20533073 in words is "twenty million, five hundred thirty-three thousand, seventy-three".