20133536 has 24 divisors (see below), whose sum is σ = 39742164. Its totient is φ = 10040320.

The previous prime is 20133527. The next prime is 20133551. The reversal of 20133536 is 63533102.

It can be written as a sum of positive squares in 2 ways, for example, as 19749136 + 384400 = 4444^2 + 620^2 .

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 in 3 ways as a sum of consecutive naturals, for example, 18446 + ... + 19506.

Almost surely, 2^20133536 is an apocalyptic number.

It is an amenable number.

20133536 is a deficient number, since it is larger than the sum of its proper divisors (19608628).

20133536 is a wasteful number, since it uses less digits than its factorization.

20133536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1664 (or 1656 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 20133536 is about 4487.0408957352. The cubic root of 20133536 is about 272.0445428782.

Adding to 20133536 its reverse (63533102), we get a palindrome (83666638).

The spelling of 20133536 in words is "twenty million, one hundred thirty-three thousand, five hundred thirty-six".