144748728 has 64 divisors (see below), whose sum is σ = 403552800. Its totient is φ = 48072960.

The previous prime is 144748711. The next prime is 144748733. The reversal of 144748728 is 827847441.

144748728 is a `hidden beast` number, since 144 + 7 + 487 + 28 = 666.

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, 66538 + ... + 68678.

Almost surely, 2^144748728 is an apocalyptic number.

144748728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 144748728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201776400).

144748728 is an abundant number, since it is smaller than the sum of its proper divisors (258804072).

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

144748728 is a wasteful number, since it uses less digits than its factorization.

144748728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469 (or 2459 counting only the distinct ones).

The product of its digits is 401408, while the sum is 45.

The square root of 144748728 is about 12031.1565528838. The cubic root of 144748728 is about 525.0551452278.

The spelling of 144748728 in words is "one hundred forty-four million, seven hundred forty-eight thousand, seven hundred twenty-eight".