20719732 has 12 divisors (see below), whose sum is σ = 39555936. Its totient is φ = 9418040.

The previous prime is 20719729. The next prime is 20719739. The reversal of 20719732 is 23791702.

It is a junction number, because it is equal to n+sod(n) for n = 20719694 and 20719703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20719739) 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 in 3 ways as a sum of consecutive naturals, for example, 235408 + ... + 235495.

It is an arithmetic number, because the mean of its divisors is an integer number (3296328).

Almost surely, 2^20719732 is an apocalyptic number.

20719732 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20719732 is a deficient number, since it is larger than the sum of its proper divisors (18836204).

20719732 is a wasteful number, since it uses less digits than its factorization.

20719732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470918 (or 470916 counting only the distinct ones).

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 20719732 is about 4551.8932324913. The cubic root of 20719732 is about 274.6595544655.

The spelling of 20719732 in words is "twenty million, seven hundred nineteen thousand, seven hundred thirty-two".