20843948 has 12 divisors (see below), whose sum is σ = 36710352. Its totient is φ = 10355280.

The previous prime is 20843939. The next prime is 20843959. The reversal of 20843948 is 84934802.

It is an unprimeable number.

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, 15968 + ... + 17223.

It is an arithmetic number, because the mean of its divisors is an integer number (3059196).

Almost surely, 2^20843948 is an apocalyptic number.

It is an amenable number.

20843948 is a deficient number, since it is larger than the sum of its proper divisors (15866404).

20843948 is a wasteful number, since it uses less digits than its factorization.

20843948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33352 (or 33350 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 20843948 is about 4565.5172762788. The cubic root of 20843948 is about 275.2073279496.

The spelling of 20843948 in words is "twenty million, eight hundred forty-three thousand, nine hundred forty-eight".