20533432 has 8 divisors (see below), whose sum is σ = 38500200. Its totient is φ = 10266712.

The previous prime is 20533427. The next prime is 20533451. The reversal of 20533432 is 23433502.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

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, 1283332 + ... + 1283347.

It is an arithmetic number, because the mean of its divisors is an integer number (4812525).

Almost surely, 2^20533432 is an apocalyptic number.

It is an amenable number.

20533432 is a deficient number, since it is larger than the sum of its proper divisors (17966768).

20533432 is a wasteful number, since it uses less digits than its factorization.

20533432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2566685 (or 2566681 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 22.

The square root of 20533432 is about 4531.3830118409. The cubic root of 20533432 is about 273.8338808720.

Adding to 20533432 its reverse (23433502), we get a palindrome (43966934).

The spelling of 20533432 in words is "twenty million, five hundred thirty-three thousand, four hundred thirty-two".