144424290 has 16 divisors (see below), whose sum is σ = 346618368. Its totient is φ = 38513136.

The previous prime is 144424289. The next prime is 144424297. The reversal of 144424290 is 92424441.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 4814143 = 144424290 / (1 + 4 + 4 + 4 + 2 + 4 + 2 + 9 + 0).

It is not an unprimeable number, because it can be changed into a prime (144424297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2407042 + ... + 2407101.

It is an arithmetic number, because the mean of its divisors is an integer number (21663648).

Almost surely, 2^144424290 is an apocalyptic number.

144424290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

144424290 is an abundant number, since it is smaller than the sum of its proper divisors (202194078).

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

144424290 is a wasteful number, since it uses less digits than its factorization.

144424290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4814153.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 144424290 is about 12017.6657467247. The cubic root of 144424290 is about 524.6625677498.

The spelling of 144424290 in words is "one hundred forty-four million, four hundred twenty-four thousand, two hundred ninety".