20924944 has 10 divisors (see below), whose sum is σ = 40542110. Its totient is φ = 10462464.

The previous prime is 20924941. The next prime is 20924957. The reversal of 20924944 is 44942902.

It can be written as a sum of positive squares in only one way, i.e., 17539344 + 3385600 = 4188^2 + 1840^2 .

It is not an unprimeable number, because it can be changed into a prime (20924941) 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, 653889 + ... + 653920.

It is an arithmetic number, because the mean of its divisors is an integer number (4054211).

Almost surely, 2^20924944 is an apocalyptic number.

It is an amenable number.

20924944 is a deficient number, since it is larger than the sum of its proper divisors (19617166).

20924944 is a wasteful number, since it uses less digits than its factorization.

20924944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307817 (or 1307811 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 20924944 is about 4574.3790835478. The cubic root of 20924944 is about 275.5633366786.

The spelling of 20924944 in words is "twenty million, nine hundred twenty-four thousand, nine hundred forty-four".