144217378 has 8 divisors (see below), whose sum is σ = 216380268. Its totient is φ = 72090624.

The previous prime is 144217373. The next prime is 144217387. The reversal of 144217378 is 873712441.

It can be written as a sum of positive squares in 2 ways, for example, as 117353889 + 26863489 = 10833^2 + 5183^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (144217373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5850 + ... + 17962.

Almost surely, 2^144217378 is an apocalyptic number.

144217378 is a deficient number, since it is larger than the sum of its proper divisors (72162890).

144217378 is a wasteful number, since it uses less digits than its factorization.

144217378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18068.

The product of its digits is 37632, while the sum is 37.

The square root of 144217378 is about 12009.0540010444. The cubic root of 144217378 is about 524.4118923140.

The spelling of 144217378 in words is "one hundred forty-four million, two hundred seventeen thousand, three hundred seventy-eight".