20450732 has 6 divisors (see below), whose sum is σ = 35788788. Its totient is φ = 10225364.

The previous prime is 20450719. The next prime is 20450737. The reversal of 20450732 is 23705402.

It is a junction number, because it is equal to n+sod(n) for n = 20450698 and 20450707.

It is not an unprimeable number, because it can be changed into a prime (20450737) by changing a digit.

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 as a sum of consecutive naturals, namely, 2556338 + ... + 2556345.

It is an arithmetic number, because the mean of its divisors is an integer number (5964798).

Almost surely, 2^20450732 is an apocalyptic number.

It is an amenable number.

20450732 is a deficient number, since it is larger than the sum of its proper divisors (15338056).

20450732 is a wasteful number, since it uses less digits than its factorization.

20450732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5112687 (or 5112685 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

The square root of 20450732 is about 4522.2485557519. The cubic root of 20450732 is about 273.4657571037.

The spelling of 20450732 in words is "twenty million, four hundred fifty thousand, seven hundred thirty-two".