144739872 has 120 divisors (see below), whose sum is σ = 448232400. Its totient is φ = 45691776.

The previous prime is 144739843. The next prime is 144739877. The reversal of 144739872 is 278937441.

It is not an unprimeable number, because it can be changed into a prime (144739877) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47779 + ... + 50717.

It is an arithmetic number, because the mean of its divisors is an integer number (3735270).

Almost surely, 2^144739872 is an apocalyptic number.

144739872 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 144739872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224116200).

144739872 is an abundant number, since it is smaller than the sum of its proper divisors (303492528).

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

144739872 is a wasteful number, since it uses less digits than its factorization.

144739872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2980 (or 2963 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 144739872 is about 12030.7885028372. The cubic root of 144739872 is about 525.0444370550.

The spelling of 144739872 in words is "one hundred forty-four million, seven hundred thirty-nine thousand, eight hundred seventy-two".