748318640 has 40 divisors (see below), whose sum is σ = 1745565360. Its totient is φ = 298342656.

The previous prime is 748318619. The next prime is 748318661. The reversal of 748318640 is 46813847.

It is an interprime number because it is at equal distance from previous prime (748318619) and next prime (748318661).

It is a tau number, because it is divible by the number of its divisors (40).

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, 9326 + ... + 39794.

It is an arithmetic number, because the mean of its divisors is an integer number (43639134).

Almost surely, 2^748318640 is an apocalyptic number.

It is an amenable number.

748318640 is an abundant number, since it is smaller than the sum of its proper divisors (997246720).

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

748318640 is a wasteful number, since it uses less digits than its factorization.

748318640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30789 (or 30783 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 748318640 is about 27355.4133582368. The cubic root of 748318640 is about 907.8808475681.

The spelling of 748318640 in words is "seven hundred forty-eight million, three hundred eighteen thousand, six hundred forty".