20113532 has 12 divisors (see below), whose sum is σ = 35562240. Its totient is φ = 9952896.

The previous prime is 20113507. The next prime is 20113537. The reversal of 20113532 is 23531102.

It is a self number, because there is not a number n which added to its sum of digits gives 20113532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20113537) 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 3 ways as a sum of consecutive naturals, for example, 25532 + ... + 26307.

It is an arithmetic number, because the mean of its divisors is an integer number (2963520).

Almost surely, 2^20113532 is an apocalyptic number.

It is an amenable number.

20113532 is a deficient number, since it is larger than the sum of its proper divisors (15448708).

20113532 is a wasteful number, since it uses less digits than its factorization.

20113532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51940 (or 51938 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 20113532 is about 4484.8112557832. The cubic root of 20113532 is about 271.9544149386.

Adding to 20113532 its reverse (23531102), we get a palindrome (43644634).

The spelling of 20113532 in words is "twenty million, one hundred thirteen thousand, five hundred thirty-two".