144387072 has 66 divisors (see below), whose sum is σ = 416941148. Its totient is φ = 48125952.

The previous prime is 144387059. The next prime is 144387083. The reversal of 144387072 is 270783441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1383 + ... + 17049.

Almost surely, 2^144387072 is an apocalyptic number.

144387072 is a gapful number since it is divisible by the number (12) 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 144387072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208470574).

144387072 is an abundant number, since it is smaller than the sum of its proper divisors (272554076).

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

144387072 is a wasteful number, since it uses less digits than its factorization.

144387072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15693 (or 15672 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 144387072 is about 12016.1171765259. The cubic root of 144387072 is about 524.6174955323.

The spelling of 144387072 in words is "one hundred forty-four million, three hundred eighty-seven thousand, seventy-two".