144787728 has 40 divisors (see below), whose sum is σ = 383162976. Its totient is φ = 47084800.

The previous prime is 144787723. The next prime is 144787757. The reversal of 144787728 is 827787441.

144787728 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (144787723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34818 + ... + 38753.

Almost surely, 2^144787728 is an apocalyptic number.

It is an amenable number.

144787728 is an abundant number, since it is smaller than the sum of its proper divisors (238375248).

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

144787728 is a wasteful number, since it uses less digits than its factorization.

144787728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73623 (or 73617 counting only the distinct ones).

The product of its digits is 702464, while the sum is 48.

The square root of 144787728 is about 12032.7772355346. Note that the first 3 decimals coincide. The cubic root of 144787728 is about 525.1022966194.

The spelling of 144787728 in words is "one hundred forty-four million, seven hundred eighty-seven thousand, seven hundred twenty-eight".