744436820 has 24 divisors (see below), whose sum is σ = 1568665224. Its totient is φ = 296756096.

The previous prime is 744436813. The next prime is 744436831. The reversal of 744436820 is 28634447.

744436820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 120736144 + 623700676 = 10988^2 + 24974^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57659 + ... + 69378.

It is an arithmetic number, because the mean of its divisors is an integer number (65361051).

Almost surely, 2^744436820 is an apocalyptic number.

It is an amenable number.

744436820 is an abundant number, since it is smaller than the sum of its proper divisors (824228404).

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

744436820 is a wasteful number, since it uses less digits than its factorization.

744436820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127339 (or 127337 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 38.

The square root of 744436820 is about 27284.3695180959. The cubic root of 744436820 is about 906.3082814995.

The spelling of 744436820 in words is "seven hundred forty-four million, four hundred thirty-six thousand, eight hundred twenty".