20533484 has 24 divisors (see below), whose sum is σ = 38592288. Its totient is φ = 9524480.

The previous prime is 20533481. The next prime is 20533511. The reversal of 20533484 is 48433502.

It is not an unprimeable number, because it can be changed into a prime (20533481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2702 + ... + 6954.

It is an arithmetic number, because the mean of its divisors is an integer number (1608012).

Almost surely, 2^20533484 is an apocalyptic number.

It is an amenable number.

20533484 is a deficient number, since it is larger than the sum of its proper divisors (18058804).

20533484 is a wasteful number, since it uses less digits than its factorization.

20533484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4345 (or 4343 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 20533484 is about 4531.3887495998. The cubic root of 20533484 is about 273.8341120291.

Adding to 20533484 its reverse (48433502), we get a palindrome (68966986).

The spelling of 20533484 in words is "twenty million, five hundred thirty-three thousand, four hundred eighty-four".