744645144 has 32 divisors (see below), whose sum is σ = 1863655920. Its totient is φ = 247942656.

The previous prime is 744645137. The next prime is 744645149. The reversal of 744645144 is 441546447.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744645149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5932 + ... + 39044.

Almost surely, 2^744645144 is an apocalyptic number.

It is an amenable number.

744645144 is an abundant number, since it is smaller than the sum of its proper divisors (1119010776).

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

744645144 is a wasteful number, since it uses less digits than its factorization.

744645144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34059 (or 34055 counting only the distinct ones).

The product of its digits is 215040, while the sum is 39.

The square root of 744645144 is about 27288.1868946986. The cubic root of 744645144 is about 906.3928143760.

The spelling of 744645144 in words is "seven hundred forty-four million, six hundred forty-five thousand, one hundred forty-four".