744487540 has 24 divisors (see below), whose sum is σ = 1585446912. Its totient is φ = 293600160.

The previous prime is 744487519. The next prime is 744487543. The reversal of 744487540 is 45784447.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744487543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 260724 + ... + 263563.

It is an arithmetic number, because the mean of its divisors is an integer number (66060288).

Almost surely, 2^744487540 is an apocalyptic number.

It is an amenable number.

744487540 is an abundant number, since it is smaller than the sum of its proper divisors (840959372).

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

744487540 is a wasteful number, since it uses less digits than its factorization.

744487540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524367 (or 524365 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 43.

The square root of 744487540 is about 27285.2989721571. The cubic root of 744487540 is about 906.3288639098.

The spelling of 744487540 in words is "seven hundred forty-four million, four hundred eighty-seven thousand, five hundred forty".