20939848 has 16 divisors (see below), whose sum is σ = 40220460. Its totient is φ = 10214400.

The previous prime is 20939837. The next prime is 20939857. The reversal of 20939848 is 84893902.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20052484 + 887364 = 4478^2 + 942^2 .

It is an unprimeable number.

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, 31593 + ... + 32248.

Almost surely, 2^20939848 is an apocalyptic number.

It is an amenable number.

20939848 is a deficient number, since it is larger than the sum of its proper divisors (19280612).

20939848 is a wasteful number, since it uses less digits than its factorization.

20939848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63888 (or 63884 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 20939848 is about 4576.0078671261. The cubic root of 20939848 is about 275.6287453964.

The spelling of 20939848 in words is "twenty million, nine hundred thirty-nine thousand, eight hundred forty-eight".