144640016 has 20 divisors (see below), whose sum is σ = 282964032. Its totient is φ = 71617056.

The previous prime is 144639997. The next prime is 144640019. The reversal of 144640016 is 610046441.

It is not an unprimeable number, because it can be changed into a prime (144640019) 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, 42236 + ... + 45531.

Almost surely, 2^144640016 is an apocalyptic number.

144640016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

144640016 is a deficient number, since it is larger than the sum of its proper divisors (138324016).

144640016 is a wasteful number, since it uses less digits than its factorization.

144640016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87878 (or 87872 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 144640016 is about 12026.6377678884. The cubic root of 144640016 is about 524.9236666041.

Adding to 144640016 its reverse (610046441), we get a palindrome (754686457).

The spelling of 144640016 in words is "one hundred forty-four million, six hundred forty thousand, sixteen".