20383533 has 12 divisors (see below), whose sum is σ = 29482908. Its totient is φ = 13570560.

The previous prime is 20383513. The next prime is 20383537. The reversal of 20383533 is 33538302.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2082249 + 18301284 = 1443^2 + 4278^2 .

It is not a de Polignac number, because 20383533 - 2⁸ = 20383277 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20383497 and 20383506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20383537) 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 11 ways as a sum of consecutive naturals, for example, 10023 + ... + 11883.

It is an arithmetic number, because the mean of its divisors is an integer number (2456909).

Almost surely, 2^20383533 is an apocalyptic number.

It is an amenable number.

20383533 is a deficient number, since it is larger than the sum of its proper divisors (9099375).

20383533 is a wasteful number, since it uses less digits than its factorization.

20383533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3084 (or 3081 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 20383533 is about 4514.8126206965. The cubic root of 20383533 is about 273.1659016571.

The spelling of 20383533 in words is "twenty million, three hundred eighty-three thousand, five hundred thirty-three".