20144927 has 6 divisors (see below), whose sum is σ = 22142904. Its totient is φ = 18313460.

The previous prime is 20144923. The next prime is 20144951. The reversal of 20144927 is 72944102.

It is not a de Polignac number, because 20144927 - 2² = 20144923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20144927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20144923) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 83123 + ... + 83364.

It is an arithmetic number, because the mean of its divisors is an integer number (3690484).

Almost surely, 2^20144927 is an apocalyptic number.

20144927 is a deficient number, since it is larger than the sum of its proper divisors (1997977).

20144927 is a wasteful number, since it uses less digits than its factorization.

20144927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166509 (or 166498 counting only the distinct ones).

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

The square root of 20144927 is about 4488.3100383106. The cubic root of 20144927 is about 272.0958383082.

The spelling of 20144927 in words is "twenty million, one hundred forty-four thousand, nine hundred twenty-seven".