144012780 has 144 divisors (see below), whose sum is σ = 487075680. Its totient is φ = 34228224.

The previous prime is 144012773. The next prime is 144012823. The reversal of 144012780 is 87210441.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56902 + ... + 59378.

It is an arithmetic number, because the mean of its divisors is an integer number (3382470).

Almost surely, 2^144012780 is an apocalyptic number.

144012780 is a gapful number since it is divisible by the number (10) 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 144012780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243537840).

144012780 is an abundant number, since it is smaller than the sum of its proper divisors (343062900).

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

144012780 is a wasteful number, since it uses less digits than its factorization.

144012780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2528 (or 2523 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 144012780 is about 12000.5324881857. The cubic root of 144012780 is about 524.1637844363.

The spelling of 144012780 in words is "one hundred forty-four million, twelve thousand, seven hundred eighty".