744728448 has 32 divisors (see below), whose sum is σ = 1978185960. Its totient is φ = 248242688.

The previous prime is 744728447. The next prime is 744728459. The reversal of 744728448 is 844827447.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×744728448² = 1109240922520977408, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 744728397 and 744728406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744728447) by changing a digit.

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, 969315 + ... + 970082.

Almost surely, 2^744728448 is an apocalyptic number.

It is an amenable number.

744728448 is an abundant number, since it is smaller than the sum of its proper divisors (1233457512).

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

744728448 is a wasteful number, since it uses less digits than its factorization.

744728448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939414 (or 1939402 counting only the distinct ones).

The product of its digits is 1605632, while the sum is 48.

The square root of 744728448 is about 27289.7132267820. The cubic root of 744728448 is about 906.4266127260.

The spelling of 744728448 in words is "seven hundred forty-four million, seven hundred twenty-eight thousand, four hundred forty-eight".