144346840 has 32 divisors (see below), whose sum is σ = 354306960. Its totient is φ = 52489600.

The previous prime is 144346831. The next prime is 144346841. The reversal of 144346840 is 48643441.

It is a junction number, because it is equal to n+sod(n) for n = 144346796 and 144346805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144346841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163591 + ... + 164470.

Almost surely, 2^144346840 is an apocalyptic number.

144346840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144346840 is an abundant number, since it is smaller than the sum of its proper divisors (209960120).

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

144346840 is a wasteful number, since it uses less digits than its factorization.

144346840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328083 (or 328079 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 34.

The square root of 144346840 is about 12014.4429750197. The cubic root of 144346840 is about 524.5687645495.

The spelling of 144346840 in words is "one hundred forty-four million, three hundred forty-six thousand, eight hundred forty".