20844934 has 16 divisors (see below), whose sum is σ = 34444800. Its totient is φ = 9381960.

The previous prime is 20844883. The next prime is 20844937. The reversal of 20844934 is 43944802.

It is a super-2 number, since 2×20844934² = 869022546928712, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20844934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20844937) 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 in 7 ways as a sum of consecutive naturals, for example, 2334 + ... + 6865.

It is an arithmetic number, because the mean of its divisors is an integer number (2152800).

Almost surely, 2^20844934 is an apocalyptic number.

20844934 is a deficient number, since it is larger than the sum of its proper divisors (13599866).

20844934 is a wasteful number, since it uses less digits than its factorization.

20844934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9315.

The product of its (nonzero) digits is 27648, while the sum is 34.

The square root of 20844934 is about 4565.6252583847. The cubic root of 20844934 is about 275.2116673410.

The spelling of 20844934 in words is "twenty million, eight hundred forty-four thousand, nine hundred thirty-four".