144523340 has 48 divisors (see below), whose sum is σ = 331490880. Its totient is φ = 52604160.

The previous prime is 144523339. The next prime is 144523349. The reversal of 144523340 is 43325441.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (144523349) 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, 14546 + ... + 22374.

It is an arithmetic number, because the mean of its divisors is an integer number (6906060).

Almost surely, 2^144523340 is an apocalyptic number.

144523340 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 144523340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165745440).

144523340 is an abundant number, since it is smaller than the sum of its proper divisors (186967540).

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

144523340 is a wasteful number, since it uses less digits than its factorization.

144523340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7922 (or 7920 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 144523340 is about 12021.7860569884. The cubic root of 144523340 is about 524.7824828314.

Adding to 144523340 its reverse (43325441), we get a palindrome (187848781).

The spelling of 144523340 in words is "one hundred forty-four million, five hundred twenty-three thousand, three hundred forty".