144912780 has 96 divisors (see below), whose sum is σ = 455474880. Its totient is φ = 38246400.

The previous prime is 144912769. The next prime is 144912787. The reversal of 144912780 is 87219441.

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

It is not an unprimeable number, because it can be changed into a prime (144912787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53212 + ... + 55868.

It is an arithmetic number, because the mean of its divisors is an integer number (4744530).

Almost surely, 2^144912780 is an apocalyptic number.

144912780 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 144912780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227737440).

144912780 is an abundant number, since it is smaller than the sum of its proper divisors (310562100).

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

144912780 is a wasteful number, since it uses less digits than its factorization.

144912780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776 (or 2768 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 144912780 is about 12037.9724206363. The cubic root of 144912780 is about 525.2534286653.

It can be divided in two parts, 14491 and 2780, that added together give a palindrome (17271).

The spelling of 144912780 in words is "one hundred forty-four million, nine hundred twelve thousand, seven hundred eighty".