144288146 has 16 divisors (see below), whose sum is σ = 230127480. Its totient is φ = 67614720.

The previous prime is 144288107. The next prime is 144288169. The reversal of 144288146 is 641882441.

It can be written as a sum of positive squares in 4 ways, for example, as 144264121 + 24025 = 12011^2 + 155^2 .

It is a super-2 number, since 2×144288146² = 41638138152234632, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 611 + ... + 16998.

Almost surely, 2^144288146 is an apocalyptic number.

144288146 is a deficient number, since it is larger than the sum of its proper divisors (85839334).

144288146 is a wasteful number, since it uses less digits than its factorization.

144288146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17869.

The product of its digits is 49152, while the sum is 38.

The square root of 144288146 is about 12012.0000832501. Note that the first 4 decimals coincide. The cubic root of 144288146 is about 524.4976552382.

The spelling of 144288146 in words is "one hundred forty-four million, two hundred eighty-eight thousand, one hundred forty-six".