144264644 has 24 divisors (see below), whose sum is σ = 269401440. Its totient is φ = 67397184.

The previous prime is 144264643. The next prime is 144264689. The reversal of 144264644 is 446462441.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (144264643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7454 + ... + 18549.

It is an arithmetic number, because the mean of its divisors is an integer number (11225060).

Almost surely, 2^144264644 is an apocalyptic number.

It is an amenable number.

144264644 is a deficient number, since it is larger than the sum of its proper divisors (125136796).

144264644 is a wasteful number, since it uses less digits than its factorization.

144264644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26099 (or 26097 counting only the distinct ones).

The product of its digits is 73728, while the sum is 35.

The square root of 144264644 is about 12011.0217716895. The cubic root of 144264644 is about 524.4691765457.

The spelling of 144264644 in words is "one hundred forty-four million, two hundred sixty-four thousand, six hundred forty-four".