144722240 has 112 divisors (see below), whose sum is σ = 390875520. Its totient is φ = 50595840.

The previous prime is 144722239. The next prime is 144722293. The reversal of 144722240 is 42227441.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78125 + ... + 79955.

It is an arithmetic number, because the mean of its divisors is an integer number (3489960).

Almost surely, 2^144722240 is an apocalyptic number.

144722240 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 144722240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195437760).

144722240 is an abundant number, since it is smaller than the sum of its proper divisors (246153280).

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

144722240 is a wasteful number, since it uses less digits than its factorization.

144722240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1880 (or 1870 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 26.

The square root of 144722240 is about 12030.0556939692. The cubic root of 144722240 is about 525.0231161401.

Adding to 144722240 its reverse (42227441), we get a palindrome (186949681).

The spelling of 144722240 in words is "one hundred forty-four million, seven hundred twenty-two thousand, two hundred forty".