20075144 has 16 divisors (see below), whose sum is σ = 37939200. Its totient is φ = 9958032.

The previous prime is 20075141. The next prime is 20075149. The reversal of 20075144 is 44157002.

It is a super-2 number, since 2×20075144² = 806022813241472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20075141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8864 + ... + 10895.

It is an arithmetic number, because the mean of its divisors is an integer number (2371200).

Almost surely, 2^20075144 is an apocalyptic number.

It is an amenable number.

20075144 is a deficient number, since it is larger than the sum of its proper divisors (17864056).

20075144 is a wasteful number, since it uses less digits than its factorization.

20075144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19892 (or 19888 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 20075144 is about 4480.5294330023. The cubic root of 20075144 is about 271.7812904503.

The spelling of 20075144 in words is "twenty million, seventy-five thousand, one hundred forty-four".