20724952 has 16 divisors (see below), whose sum is σ = 38926440. Its totient is φ = 10344576.

The previous prime is 20724943. The next prime is 20724959. The reversal of 20724952 is 25942702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20724959) 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, 3568 + ... + 7360.

Almost surely, 2^20724952 is an apocalyptic number.

It is an amenable number.

20724952 is a deficient number, since it is larger than the sum of its proper divisors (18201488).

20724952 is a wasteful number, since it uses less digits than its factorization.

20724952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4482 (or 4478 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 20724952 is about 4552.4665841717. The cubic root of 20724952 is about 274.6826178669.

The spelling of 20724952 in words is "twenty million, seven hundred twenty-four thousand, nine hundred fifty-two".