730139456 has 28 divisors (see below), whose sum is σ = 1450477668. Its totient is φ = 364664832.

The previous prime is 730139419. The next prime is 730139461. The reversal of 730139456 is 654931037.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 656179456 + 73960000 = 25616^2 + 8600^2 .

It is a congruent number.

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, 56690 + ... + 68366.

Almost surely, 2^730139456 is an apocalyptic number.

It is an amenable number.

730139456 is a deficient number, since it is larger than the sum of its proper divisors (720338212).

730139456 is a wasteful number, since it uses less digits than its factorization.

730139456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12666 (or 12656 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 730139456 is about 27021.0927980346. The cubic root of 730139456 is about 900.4686678367.

The spelling of 730139456 in words is "seven hundred thirty million, one hundred thirty-nine thousand, four hundred fifty-six".