20247932 has 24 divisors (see below), whose sum is σ = 36505392. Its totient is φ = 9820800.

The previous prime is 20247907. The next prime is 20247947. The reversal of 20247932 is 23974202.

It is a happy number.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20247895 and 20247904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54098 + ... + 54470.

It is an arithmetic number, because the mean of its divisors is an integer number (1521058).

Almost surely, 2^20247932 is an apocalyptic number.

It is an amenable number.

20247932 is a deficient number, since it is larger than the sum of its proper divisors (16257460).

20247932 is a wasteful number, since it uses less digits than its factorization.

20247932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 20247932 is about 4499.7702163555. The cubic root of 20247932 is about 272.5588100771.

The spelling of 20247932 in words is "twenty million, two hundred forty-seven thousand, nine hundred thirty-two".