20533532 has 24 divisors (see below), whose sum is σ = 37965312. Its totient is φ = 9702000.

The previous prime is 20533531. The next prime is 20533553. The reversal of 20533532 is 23533502.

It is a junction number, because it is equal to n+sod(n) for n = 20533498 and 20533507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20533531) 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 7 ways as a sum of consecutive naturals, for example, 3407 + ... + 7257.

It is an arithmetic number, because the mean of its divisors is an integer number (1581888).

Almost surely, 2^20533532 is an apocalyptic number.

It is an amenable number.

20533532 is a deficient number, since it is larger than the sum of its proper divisors (17431780).

20533532 is a wasteful number, since it uses less digits than its factorization.

20533532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3929 (or 3927 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 23.

The square root of 20533532 is about 4531.3940459863. The cubic root of 20533532 is about 273.8343254046.

The spelling of 20533532 in words is "twenty million, five hundred thirty-three thousand, five hundred thirty-two".