144781452 has 48 divisors (see below), whose sum is σ = 397444320. Its totient is φ = 45421056.

The previous prime is 144781447. The next prime is 144781453. The reversal of 144781452 is 254187441.

It is a happy number.

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 (144781453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37593 + ... + 41264.

It is an arithmetic number, because the mean of its divisors is an integer number (8280090).

Almost surely, 2^144781452 is an apocalyptic number.

144781452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

144781452 is an abundant number, since it is smaller than the sum of its proper divisors (252662868).

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

144781452 is a wasteful number, since it uses less digits than its factorization.

144781452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78887 (or 78879 counting only the distinct ones).

The product of its digits is 35840, while the sum is 36.

The square root of 144781452 is about 12032.5164450334. The cubic root of 144781452 is about 525.0947094441.

The spelling of 144781452 in words is "one hundred forty-four million, seven hundred eighty-one thousand, four hundred fifty-two".