20927144 has 32 divisors (see below), whose sum is σ = 45019200. Its totient is φ = 8933760.

The previous prime is 20927143. The next prime is 20927147. The reversal of 20927144 is 44172902.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (20927141) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 17972 + ... + 19100.

It is an arithmetic number, because the mean of its divisors is an integer number (1406850).

Almost surely, 2^20927144 is an apocalyptic number.

It is an amenable number.

20927144 is an abundant number, since it is smaller than the sum of its proper divisors (24092056).

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

20927144 is a wasteful number, since it uses less digits than its factorization.

20927144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1473 (or 1469 counting only the distinct ones).

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

The square root of 20927144 is about 4574.6195470225. The cubic root of 20927144 is about 275.5729937031.

The spelling of 20927144 in words is "twenty million, nine hundred twenty-seven thousand, one hundred forty-four".