740631728 has 20 divisors (see below), whose sum is σ = 1442907648. Its totient is φ = 368268480.

The previous prime is 740631713. The next prime is 740631737. The reversal of 740631728 is 827136047.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 740631691 and 740631700.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 124976 + ... + 130767.

Almost surely, 2^740631728 is an apocalyptic number.

It is an amenable number.

740631728 is a deficient number, since it is larger than the sum of its proper divisors (702275920).

740631728 is a wasteful number, since it uses less digits than its factorization.

740631728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255932 (or 255926 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 740631728 is about 27214.5499319757. The cubic root of 740631728 is about 904.7614841052.

The spelling of 740631728 in words is "seven hundred forty million, six hundred thirty-one thousand, seven hundred twenty-eight".