144424278 has 24 divisors (see below), whose sum is σ = 313518816. Its totient is φ = 48049200.

The previous prime is 144424277. The next prime is 144424289. The reversal of 144424278 is 872424441.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144424277) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2323 + ... + 17153.

It is an arithmetic number, because the mean of its divisors is an integer number (13063284).

Almost surely, 2^144424278 is an apocalyptic number.

144424278 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

144424278 is an abundant number, since it is smaller than the sum of its proper divisors (169094538).

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

144424278 is a wasteful number, since it uses less digits than its factorization.

144424278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15380 (or 15377 counting only the distinct ones).

The product of its digits is 57344, while the sum is 36.

The square root of 144424278 is about 12017.6652474597. The cubic root of 144424278 is about 524.6625532186.

The spelling of 144424278 in words is "one hundred forty-four million, four hundred twenty-four thousand, two hundred seventy-eight".