20913032 has 16 divisors (see below), whose sum is σ = 44813760. Its totient is φ = 8962704.

The previous prime is 20912989. The next prime is 20913037. The reversal of 20913032 is 23031902.

It is a junction number, because it is equal to n+sod(n) for n = 20912995 and 20913013.

It is not an unprimeable number, because it can be changed into a prime (20913037) 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, 186668 + ... + 186779.

It is an arithmetic number, because the mean of its divisors is an integer number (2800860).

Almost surely, 2^20913032 is an apocalyptic number.

It is an amenable number.

20913032 is an abundant number, since it is smaller than the sum of its proper divisors (23900728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20913032 is a wasteful number, since it uses less digits than its factorization.

20913032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373460 (or 373456 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 20913032 is about 4573.0768635570. The cubic root of 20913032 is about 275.5110365220.

Adding to 20913032 its reverse (23031902), we get a palindrome (43944934).

The spelling of 20913032 in words is "twenty million, nine hundred thirteen thousand, thirty-two".