20271944 has 32 divisors (see below), whose sum is σ = 47390400. Its totient is φ = 7897920.

The previous prime is 20271919. The next prime is 20271949. The reversal of 20271944 is 44917202.

It is not an unprimeable number, because it can be changed into a prime (20271949) 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, 15839 + ... + 17070.

It is an arithmetic number, because the mean of its divisors is an integer number (1480950).

Almost surely, 2^20271944 is an apocalyptic number.

It is an amenable number.

20271944 is an abundant number, since it is smaller than the sum of its proper divisors (27118456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20271944 is a wasteful number, since it uses less digits than its factorization.

20271944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32933 (or 32929 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 20271944 is about 4502.4375620324. The cubic root of 20271944 is about 272.6665099110. Note that the first 3 decimals are identical.

The spelling of 20271944 in words is "twenty million, two hundred seventy-one thousand, nine hundred forty-four".