144002668 has 12 divisors (see below), whose sum is σ = 258815872. Its totient is φ = 70055280.

The previous prime is 144002659. The next prime is 144002687. The reversal of 144002668 is 866200441.

It is a super-2 number, since 2×144002668² = 41473536782236448, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 486348 + ... + 486643.

Almost surely, 2^144002668 is an apocalyptic number.

It is an amenable number.

144002668 is a deficient number, since it is larger than the sum of its proper divisors (114813204).

144002668 is a wasteful number, since it uses less digits than its factorization.

144002668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973032 (or 973030 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 144002668 is about 12000.1111661518. Note that the first 4 decimals coincide. The cubic root of 144002668 is about 524.1515159227.

The spelling of 144002668 in words is "one hundred forty-four million, two thousand, six hundred sixty-eight".