144648728 has 64 divisors (see below), whose sum is σ = 323635200. Its totient is φ = 59304960.

The previous prime is 144648719. The next prime is 144648731. The reversal of 144648728 is 827846441.

It is a Cunningham number, because it is equal to 12027²-1.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167963 + ... + 168821.

It is an arithmetic number, because the mean of its divisors is an integer number (5056800).

Almost surely, 2^144648728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144648728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (161817600).

144648728 is an abundant number, since it is smaller than the sum of its proper divisors (178986472).

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

144648728 is a wasteful number, since it uses less digits than its factorization.

144648728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000 (or 996 counting only the distinct ones).

The product of its digits is 344064, while the sum is 44.

The square root of 144648728 is about 12026.9999584269. Note that the first 4 decimals coincide. The cubic root of 144648728 is about 524.9342055114.

The spelling of 144648728 in words is "one hundred forty-four million, six hundred forty-eight thousand, seven hundred twenty-eight".