20744924 has 12 divisors (see below), whose sum is σ = 36343944. Its totient is φ = 10360944.

The previous prime is 20744923. The next prime is 20744929. The reversal of 20744924 is 42944702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20744923) 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, 2147 + ... + 6789.

It is an arithmetic number, because the mean of its divisors is an integer number (3028662).

Almost surely, 2^20744924 is an apocalyptic number.

It is an amenable number.

20744924 is a deficient number, since it is larger than the sum of its proper divisors (15599020).

20744924 is a wasteful number, since it uses less digits than its factorization.

20744924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5764 (or 5762 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 20744924 is about 4554.6595921100. The cubic root of 20744924 is about 274.7708239412.

The spelling of 20744924 in words is "twenty million, seven hundred forty-four thousand, nine hundred twenty-four".