144556340 has 12 divisors (see below), whose sum is σ = 303568356. Its totient is φ = 57822528.

The previous prime is 144556331. The next prime is 144556361. The reversal of 144556340 is 43655441.

It can be written as a sum of positive squares in 2 ways, for example, as 80748196 + 63808144 = 8986^2 + 7988^2 .

It is a junction number, because it is equal to n+sod(n) for n = 144556297 and 144556306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3613889 + ... + 3613928.

It is an arithmetic number, because the mean of its divisors is an integer number (25297363).

Almost surely, 2^144556340 is an apocalyptic number.

144556340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

144556340 is an abundant number, since it is smaller than the sum of its proper divisors (159012016).

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

144556340 is a wasteful number, since it uses less digits than its factorization.

144556340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7227826 (or 7227824 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 32.

The square root of 144556340 is about 12023.1584868536. The cubic root of 144556340 is about 524.8224221796.

The spelling of 144556340 in words is "one hundred forty-four million, five hundred fifty-six thousand, three hundred forty".