144678840 has 64 divisors (see below), whose sum is σ = 459574560. Its totient is φ = 36311040.

The previous prime is 144678839. The next prime is 144678887. The reversal of 144678840 is 48876441.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 144678792 and 144678801.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33421 + ... + 37500.

Almost surely, 2^144678840 is an apocalyptic number.

144678840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144678840 is an abundant number, since it is smaller than the sum of its proper divisors (314895720).

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

144678840 is a wasteful number, since it uses less digits than its factorization.

144678840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70952 (or 70948 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 144678840 is about 12028.2517432917. The cubic root of 144678840 is about 524.9706287423.

The spelling of 144678840 in words is "one hundred forty-four million, six hundred seventy-eight thousand, eight hundred forty".